Table of Contents

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
_____________

FORM 10-Q
_____________

(Mark One)
☒  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 

For the quarterly period ended March 31, 2019 or

☐  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 

For the transition period from __________________ to ___________________

Commission File Number 1-36117

inTEST Corporation
(Exact Name of Registrant as Specified in its Charter)

804 East Gate Drive, Suite 200
Mt. Laurel, New Jersey 08054
(Address of principal executive offices, including zip code)

(856) 505-8800
(Registrant's Telephone Number, including Area Code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.
YES ☒      NO ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (SS 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).
YES ☒      NO ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer" "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ 

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).
YES ☐      NO ☒

Number of shares of Common Stock, $0.01 par value, outstanding as of the close of business on April 30, 2019: 10,565,683

inTEST CORPORATION

INDEX

We are a global supplier of precision-engineered thermal, mechanical and electronic solutions for use in manufacturing and testing. Our products are used by semiconductor manufacturers to perform development, qualifying and final testing of integrated circuits (“ICs”) and wafers, and for other electronic testing across a range of markets including the automotive, defense/aerospace, energy, industrial and telecommunications markets. We also offer induction heating products for joining and forming metals in a variety of industrial markets, including automotive, aerospace, machinery, wire & fasteners, medical, semiconductor, food & beverage, and packaging. We manufacture our products in the U.S. Marketing and support activities are conducted worldwide from our facilities in the U.S., Germany, Singapore, the Netherlands and the U.K. The consolidated entity is comprised of inTEST Corporation and our wholly owned subsidiaries. We have two reportable segments, which are also our reporting units, Thermal Products ("Thermal") and Electromechanical Semiconductor Products ("EMS").

The automated test equipment ("ATE") market, which is the principal market in which we operate, is characterized by rapid technological change, competitive pricing pressures and cyclical as well as seasonal market patterns. This market is subject to significant economic downturns at various times. Our financial results are affected by a wide variety of factors, including, but not limited to, general economic conditions worldwide and in the markets in which we operate, economic conditions specific to the ATE market and the other markets we serve, our ability to safeguard patented technology and intellectual property in a rapidly evolving market, downward pricing pressures from customers, and our reliance on a relatively few number of customers for a significant portion of our sales. In addition, we are exposed to the risk of obsolescence of our inventory depending on the mix of future business and technological changes within the markets that we serve. We also continue to implement an acquisition strategy that may cause us to incur substantial expense in reviewing and evaluating potential transactions. We may or may not be successful in locating suitable businesses to acquire. In addition, we may not be able to successfully integrate any business we do acquire with our existing business and we may not be able to operate the acquired business profitably. As a result of these or other factors, we may experience significant period-to-period fluctuations in future operating results.

Basis of Presentation and Use of Estimates

The accompanying consolidated financial statements include our accounts and those of our wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated upon consolidation. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Certain of our accounts, including inventories, long-lived assets, goodwill, identifiable intangibles, contingent consideration and deferred tax assets and liabilities including related valuation allowances, are particularly impacted by estimates.
 

In the opinion of management, the accompanying unaudited consolidated financial statements include all adjustments (consisting only of normal recurring adjustments) necessary to present fairly the financial position, results of operations, and changes in cash flows for the interim periods presented. Certain footnote information has been condensed or omitted from these consolidated financial statements. Therefore, these consolidated financial statements should be read in conjunction with the consolidated financial statements and accompanying footnotes included in our Form 10-K for the year ended December 31, 2018 (“2018 Form 10-K”) filed on March 26, 2019 with the Securities and Exchange Commission.

Reclassification

Certain prior period amounts have been reclassified to be comparable with the current period's presentation.

Business Combinations

Acquired businesses are accounted for using the purchase method of accounting, which requires that the purchase price be allocated to the net assets acquired at their respective fair values. Any excess of the purchase price over the estimated fair values of the net assets acquired is recorded as goodwill. Fair values of intangible assets are estimated by valuation models prepared by our management and third party advisors. The assets purchased and liabilities assumed have been reflected in our consolidated balance sheets, and the results are included in the consolidated statements of operations and consolidated statements of cash flows from the date of acquisition. Any change in the fair value of acquisition-related contingent consideration subsequent to the acquisition date, including changes from events after the acquisition date, will be recognized in the consolidated statement of operations in the period of the estimated fair value change. Acquisition-related transaction costs, including legal and accounting fees and other external costs directly related to the acquisition, are recognized separately from the acquisition and expensed as incurred in general and administrative expense in the consolidated statements of operations.

Goodwill, Intangible and Long-Lived Assets

We account for goodwill and intangible assets in accordance with Accounting Standards Codification (“ASC”) 350 (Intangibles - Goodwill and Other). Finite-lived intangible assets are amortized over their estimated useful economic life and are carried at cost less accumulated amortization. Goodwill is assessed for impairment annually in the fourth quarter on a reporting unit basis, or more frequently when events and circumstances occur indicating that the recorded goodwill may be impaired. Goodwill is considered to be impaired if the fair value of a reporting unit is less than its carrying amount. As a part of the goodwill impairment assessment, we have the option to perform a qualitative assessment to determine whether it is more-likely-than-not that the fair value of a reporting unit is less than its carrying amount. If, as a result of our qualitative assessment, we determine that it is more-likely-than-not that the fair value of the reporting unit is greater than its carrying amount, a quantitative goodwill impairment test is not required. However, if, as a result of our qualitative assessment, we determine it is more-likely-than-not that the fair value of a reporting unit is less than its carrying amount, or, if we choose not to perform a qualitative assessment, we are required to perform a quantitative goodwill impairment test to identify potential goodwill impairment and measure the amount of goodwill impairment loss to be recognized.

The quantitative goodwill impairment test compares the fair value of a reporting unit with its carrying amount, including goodwill. If the fair value of a reporting unit exceeds its carrying amount, goodwill of the reporting unit is considered not impaired. If the carrying amount of a reporting unit exceeds its fair value, an impairment loss will be recognized in an amount equal to that excess, limited to the total amount of goodwill allocated to that reporting unit. The goodwill impairment assessment is based upon a combination of the income approach, which estimates the fair value of our reporting units based upon a discounted cash flow approach, and the market approach which estimates the fair value of our reporting units based upon comparable market multiples. This fair value is then reconciled to our market capitalization at year end with an appropriate control premium. The determination of the fair value of our reporting units requires management to make significant estimates and assumptions including the selection of appropriate peer group companies, control premiums, discount rate, terminal growth rates, forecasts of revenue and expense growth rates, income tax rates, changes in working capital, depreciation, amortization and capital expenditures. Changes in assumptions concerning future financial results or other underlying assumptions could have a significant impact on either the fair value of the reporting unit or the amount of the goodwill impairment charge.

 
Indefinite-lived intangible assets are assessed for impairment annually in the fourth quarter, or more frequently if events or changes in circumstances indicate that the asset might be impaired. As a part of the impairment assessment, we have the option to perform a qualitative assessment to determine whether it is more likely than not that an indefinite-lived intangible asset is impaired. If, as a result of our qualitative assessment, we determine that it is more-likely-than-not that the fair value of the indefinite-lived intangible asset is less than its carrying amount, the quantitative impairment test is required; otherwise, no further testing is required. The quantitative impairment test consists of a comparison of the fair value of the intangible asset with its carrying amount. If the carrying amount of the intangible asset exceeds its fair value, an impairment loss is recognized in an amount equal to that excess.

Long-lived assets, which consist of finite-lived intangible assets and property and equipment, are assessed for impairment whenever events or changes in business circumstances indicate that the carrying amount of the assets may not be fully recoverable or that the useful lives of these assets are no longer appropriate. Each impairment test is based on a comparison of the estimated undiscounted cash flows to the recorded value of the asset. If impairment is indicated, the asset is written down to its estimated fair value. The cash flow estimates used to determine the impairment, if any, contain management's best estimates using appropriate assumptions and projections at that time.

Revenue Recognition

We recognize revenue in accordance with the guidance in ASC 606 (Revenue from Contracts with Customers). We recognize revenue for the sale of products or services when our performance obligations under the terms of a contract with a customer are satisfied and control of the product or service has been transferred to the customer. Generally this occurs when we ship a product or perform a service. In certain cases, recognition of revenue is deferred until the product is received by the customer or at some other point in the future when we have determined that we have satisfied our performance obligations under the contract. Our contracts with customers may include a combination of products and services, which are generally capable of being distinct and accounted for as separate performance obligations. In addition to the sale of products and services, we also lease certain of our equipment under short-term lease agreements. We recognize revenue from equipment leases on a straight-line basis over the lease term.

Revenue is recorded in an amount that reflects the consideration we expect to receive in exchange for those products or services. We do not have any material variable consideration arrangements or any material payment terms with our customers other than standard net 30 or net 60 day payment terms. We generally do not provide a right of return to our customers. Revenue is recognized net of any taxes collected from customers, which are subsequently remitted to governmental authorities.

Nature of Products and Services

We sell thermal management products and semiconductor ATE interface solutions. Our thermal management products include ThermoStreams, ThermoChambers and process chillers, which we sell under our Temptronic, Sigma and Thermonics product lines, and Ambrell’s precision induction heating systems, including EkoHeat and EasyHeat products. Our semiconductor ATE interface solutions include manipulators, docking hardware and electrical interface products. We provide post-warranty service for the equipment we sell. We sell semiconductor ATE interface solutions and certain thermal management products to the ATE market, which provides automated test equipment to the semiconductor market. We also sell our thermal management products to markets outside the semiconductor market which include the automotive, defense/aerospace, industrial, telecommunications and other markets.

We lease certain of our equipment under short-term leasing agreements with original lease terms of six months or less. Our lease agreements do not contain purchase options.

Types of Contracts with Customers  

Our contracts with customers are generally structured as individual purchase orders which specify the exact products or services being sold or equipment being leased along with the selling price, service fee or monthly lease amount for each individual item on the purchase order. Payment terms and any other customer-specific acceptance criteria are also specified on the purchase order. We generally do not have any customer-specific acceptance criteria, other than that the product performs within the agreed upon specifications. We test substantially all products manufactured as part of our quality assurance process to determine that they comply with specifications prior to shipment to a customer.

Contract Balances  

We record accounts receivable at the time of invoicing. Accounts receivable, net of the allowance for doubtful accounts, is included in current assets on our balance sheet. To the extent that we do not recognize revenue at the same time as we invoice, we record a liability for deferred revenue. In certain instances, we also receive customer deposits in advance of invoicing and recording of accounts receivable. Deferred revenue and customer deposits are included in current liabilities on our consolidated balance sheets.

The allowance for doubtful accounts reflects our best estimate of probable losses inherent in the accounts receivable balance. We determine the allowance based on known troubled accounts, if any, historical experience, and other currently available evidence.

Costs to Obtain a Contract with a Customer 

The only costs we incur associated with obtaining contracts with customers are sales commissions that we pay to our internal sales personnel or third-party sales representatives. These costs are calculated based on an established percentage of the selling price of each product or service sold. Commissions are considered earned by our internal sales personnel at the time we recognize revenue for a particular transaction. Commissions are considered earned by third-party sales representatives at the time that revenue is recognized for a particular transaction. We record commission expense in our consolidated statements of operations at the time the commission is earned. Commissions earned but not yet paid are included in current liabilities on our balance sheets.

Product Warranties

In connection with the sale of our products, we generally provide standard one or two year product warranties which are detailed in our terms and conditions and communicated to our customers. Our standard warranties are not offered for sale separately from our products, therefore there is not a separate performance obligation related to our standard warranties. We record estimated warranty expense for our standard warranties at the time of sale based upon historical claims experience. In very limited cases, we offer customers an option to separately purchase an extended warranty for certain of our products. In the case of extended warranties, we recognize revenue in the amount of the sale price for the extended warranty on a straight-line basis over the extended warranty period. We record costs incurred to provide service under an extended warranty at the time the service is provided. Warranty expense is included in selling expense in our consolidated statements of operations. 

Refer to Notes 4 and 11 for further information about our revenue from contracts with customers.

Inventories

Inventories are valued at cost on a first-in, first-out basis, not in excess of market value. Cash flows from the sale of inventories are recorded in operating cash flows. On a quarterly basis, we review our inventories and record excess and obsolete inventory charges based upon our established objective excess and obsolete inventory criteria. These criteria identify material that has not been used in a work order during the prior twelve months and the quantity of material on hand that is greater than the average annual usage of that material over the prior three years. In certain cases, additional excess and obsolete inventory charges are recorded based upon current market conditions, anticipated product life cycles, new product introductions and expected future use of the inventory. The excess and obsolete inventory charges we record establish a new cost basis for the related inventories. We incurred excess and obsolete inventory charges of $107 and $61 for the three months ended March 31, 2019 and 2018, respectively.

Leases

We account for leases in accordance with ASC 842 (Leases). We determine if an arrangement is a lease at inception. A lease contract is within scope if the contract has an identified asset (property, plant or equipment) and grants the lessee the right to control the use of the asset during the lease term. The identified asset may be either explicitly or implicitly specified in the contract. In addition, the supplier must not have any practical ability to substitute a different asset and would not economically benefit from doing so for the lease contract to be in scope. The lessee’s right to control the use of the asset during the term of the lease must include the ability to obtain substantially all of the economic benefits from the use of the asset as well as decision-making authority over how the asset will be used. Leases are classified as either operating leases or finance leases based on the guidance in ASC 842. Operating leases are included in operating lease right-of-use (“ROU”) assets and operating lease liabilities in our consolidated balance sheets. Finance leases are included in property and equipment and financing lease liabilities. We do not currently have any financing leases.

ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. None of our leases provide an implicit rate, therefore, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. The operating lease ROU asset also includes any lease payments made and excludes lease incentives. Our lease terms may include options to extend or terminate the lease. We include these options in the determination of the amount of the ROU asset and lease liability when it is reasonably certain that we will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. Certain of our operating leases contain predetermined fixed escalations of minimum rentals and rent holidays during the original lease terms. Rent holidays are periods during which we have control of the leased facility but are not obligated to pay rent. For these leases, our right-of-use asset and lease liability are calculated including any rent holiday in the determination of the life of the lease.

We have lease agreements which contain both lease and non-lease components, which are generally accounted for separately. In addition to the monthly rental payments due, most of our leases for our offices and warehouse facilities include non-lease components representing our portion of the common area maintenance, property taxes and insurance charges incurred by the landlord for the facilities which we occupy. These amounts are not included in the calculation of the ROU assets and lease liabilities as they are based on actual charges incurred in the periods to which they apply.

We have made an accounting policy election not to apply the recognition requirements of ASC 842 to short-term leases (leases with a term of one year or less at the commencement date of the lease). Lease expense for short-term lease payments is recognized on a straight-line basis over the lease term.

See “Effect of Recently Adopted Amendments to Authoritative Accounting Guidance” below and Note 7 for further disclosures regarding our leases.

Contingent Liability for Repayment of State and Local Grant Funds Received

In connection with a new facility in Rochester, New York, which our subsidiary, Ambrell Corporation (“Ambrell”), occupied in May 2018, we entered into agreements with the city of Rochester and the state of New York under which we expect to receive grants totaling $550 to help offset a portion of the cost of the leasehold improvements we have made to this facility. In exchange for the funds granted to us under these agreements, we are required to create and maintain specified levels of employment in this location through various dates ending in 2023. If we fail to meet these employment targets, we will be required to repay a proportionate share of the funds received. As of March 31, 2019, we have received $200 in grant funds. We currently expect to receive the remaining $350 of grant funds during the balance of 2019. We have recorded the amounts received under these agreements as a contingent liability on our balance sheet. As time passes, portions of the funds received will no longer be subject to repayment if we have met the employment requirements of the agreements. Amounts which we are irrevocably entitled to keep will be reclassified to deferred revenue and amortized to income on a straight-line basis over the remaining lease term for the Rochester facility.

Stock-Based Compensation

We account for stock-based compensation in accordance with ASC 718 (Compensation - Stock Compensation), which requires that employee share-based equity awards be accounted for under the fair value method and requires the use of an option pricing model for estimating fair value of stock options granted, which is then amortized to expense over the service periods. See further disclosures related to our stock-based compensation plan in Note 9.

Subsequent Events

We have made an assessment of our operations and determined that there were no material subsequent events requiring adjustment to, or disclosure in, our consolidated financial statements for the three months ended March 31, 2019 other than those described in Note 12.

Income Taxes

The asset and liability method is used in accounting for income taxes. Under this method, deferred tax assets and liabilities are recognized for operating loss and tax credit carryforwards and for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in the results of operations in the period that includes the enactment date. A valuation allowance is recorded to reduce the carrying amounts of deferred tax assets if it is more likely than not that such assets will not be realized.

On December 22, 2017, the President of the United States signed into law the Tax Cuts and Jobs Act. This legislation made significant changes in the U.S. tax laws including reducing the corporate tax rate to 21% and creating a territorial tax system with a one-time mandatory transition tax payable on previously unremitted earnings of foreign subsidiaries, among other things. See Note 12 to the consolidated financial statements in our 2018 Form 10-K
for additional information regarding income taxes.

Net Earnings Per Common Share

Net earnings per common share - basic is computed by dividing net earnings by the weighted average number of common shares outstanding during each period. Net earnings per common share - diluted is computed by dividing net earnings by the weighted average number of common shares and common share equivalents outstanding during each period. Common share equivalents represent unvested shares of restricted stock and stock options and are calculated using the treasury stock method. Common share equivalents are excluded from the calculation if their effect is anti-dilutive.

The table below sets forth, for the periods indicated, a reconciliation of weighted average common shares outstanding - basic to weighted average common shares and common share equivalents outstanding - diluted and the average number of potentially dilutive securities that were excluded from the calculation of diluted earnings per share because their effect was anti-dilutive:

Effect of Recently Adopted Amendments to Authoritative Accounting Guidance

In February 2016, the FASB issued amendments to the current guidance on accounting for lease transactions, which is presented in ASC 842. Subsequent to February 2016, the FASB has issued additional clarifying guidance on certain aspects of this new guidance, along with certain practical expedients that may be applied. The intent of the updated guidance is to increase transparency and comparability among organizations by requiring lessees to recognize assets and liabilities on the balance sheet for the rights and obligations created by leases and to disclose key information about leasing arrangements. Under the new guidance, a lessee is required to record a right-of-use asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases are classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. The two permitted transition methods under the guidance are the modified retrospective transition approach, which requires application of the guidance for all comparative periods presented, and the cumulative effect adjustment approach, which requires prospective application at the adoption date.

The amendments were effective for us as of January 1, 2019. We adopted the amendments on January 1, 2019 using the cumulative effect adjustment approach. Accordingly, prior periods have not been restated. We have decided to elect the package of practical expedients which includes the grandfathering of lease classification and, accordingly, we have not re-evaluated any of our leases for classification purposes in connection with the implementation of ASC 842. They are all still being treated as operating leases under ASC 842. We do not currently have any lease contracts that meet the criteria to be categorized as financing leases under ASC 842. We do not have embedded leases nor do we have any initial direct costs. We are not electing the hindsight practical expedient and therefore are not reevaluating the lease terms that we used under ASC 840.The implementation of this new guidance had a significant impact on our consolidated balance sheet as a result of recording right-of-use assets and lease liabilities for all of our multi-year leases. Under prior guidance, none of these leases had any related asset recorded on our balance sheets. The only related liability recorded on our balance sheets was the amount which represented the difference between the lease payments we had made and the straight-line rent expense we had recorded in our statements of operations. The implementation of this new guidance did not have a significant impact on our pattern of expense recognition for any of our multi-year leases. See “Leases” above and Note 7 for further disclosures regarding our leases.
 

Goodwill and intangible assets on our balance sheets are the result of our acquisitions of Sigma Systems Corp. ("Sigma") in October 2008, Thermonics, Inc. ("Thermonics") in January 2012 and Ambrell in May 2017. All of our goodwill and intangible assets are allocated to our Thermal segment. Goodwill totaled $13,738 at each of March 31, 2019 and December 31, 2018.

Intangible Assets

Changes in the amount of the carrying value of finite-lived intangible assets for the three months ended March 31, 2019 are as follows:

The following tables provide further detail about our intangible assets as of March 31, 2019 and December 31, 2018:

We generally amortize our finite-lived intangible assets over their estimated useful lives on a straight-line basis, unless an alternate amortization method can be reliably determined. Any such alternate amortization method would be based on the pattern in which the economic benefits of the intangible asset are expected to be consumed. None of our intangible assets have any residual value.

Total amortization expense for our finite-lived intangible assets was $317 and $216, respectively, for the three months ended March 31, 2019 and 2018. The following table sets forth the estimated annual amortization expense for each of the next five years:

The following tables provide additional information about our revenue from contracts with customers, including revenue by customer and product type and revenue by market. See also Note 11 for information about revenue by operating segment and geographic region.

There was no change in the amount of the allowance for doubtful accounts for the three months ended March 31, 2019.

During the three months ended March 31, 2019 and 2018, Texas Instruments Incorporated accounted for 16% and 11% of our consolidated net revenues, respectively. While both of our segments sold to this customer, these revenues were primarily generated by our EMS segment. No other customers accounted for 10% or more of our consolidated net revenues during the three months ended March 31, 2019 and 2018.

Inventories held at March 31, 2019 and December 31, 2018 were comprised of the following:

As previously discussed in Note 2, we account for our leases in accordance with the guidance in ASC 842, which was effective for us as of January 1, 2019. In connection with the implementation of ASC 842, we recorded non-cash increases in operating lease liabilities and right-of-use assets of $5,197 and $4,816, respectively, as of the effective date of this guidance.

We lease our offices, warehouse facilities and certain equipment under non-cancellable operating leases which expire at various dates through 2028. Total operating lease cost for the three months ended March 31, 2019 and 2018 was $366 and $418, respectively. Total short-term lease cost for the three months ended March 31, 2019 and 2018 was $13 and $14, respectively. The following is additional information about our leases as of March 31, 2019:

Supplemental cash flow information related to leases for the three months ended March 31, 2019 was as follows:

The decrease reflected in the table above is a result of a modification to reduce the term of the lease for Ambrell’s facility located in the U.K. This lease originally had a 15 year term which extended through August 2029. The lease included the option to terminate the lease at specified points in time without penalty. We exercised this option in March 2019 and the lease now expires in September 2019.

Maturities of lease liabilities as of March 31, 2019 were as follows:

Letters of Credit

We have issued letters of credit as the security deposits for certain of our domestic leases. These letters of credit are secured by pledged certificates of deposit which are classified as Restricted Certificates of Deposit on our balance sheets. The terms of our leases require us to renew these letters of credit at least 30 days prior to their expiration dates for successive terms of not less than one year until lease expiration. In accordance with the terms of our lease, the letter of credit related to our facility in Mt. Laurel, New Jersey was reduced from $125 to $90 on April 1, 2019. On April 8, 2019 the lease for our Mansfield, Massachusetts facility was modified as discussed further in Note 12.

Our outstanding letters of credit at March 31, 2019 and December 31, 2018 consisted of the following:

As of March 31, 2019, we have unvested restricted stock awards and stock options granted under stock-based compensation plans that are described more fully in Note 14 to the consolidated financial statements in our 2018 Form 10-K.

As of March 31, 2019, total unrecognized compensation expense related to unvested restricted stock awards and stock options was $2,055. The weighted average period over which this expense is expected to be recognized is 3.2 years. The following table shows the allocation of the compensation expense we recorded during the three months ended March 31, 2019 and 2018, respectively, related to stock-based compensation:

There was no stock-based compensation expense capitalized in the three months ended March 31, 2019 or 2018.

Restricted Stock Awards

We record compensation expense for restricted stock awards based on the quoted market price of our stock at the grant date and amortize the expense over the vesting period. Restricted stock awards generally vest over four years for employees and over one year for our independent directors. In March 2019 and 2018, we granted 36,000 and 32,000 shares of restricted stock, respectively, to our independent directors. These shares vest 25% at each of March 31, June 30, September 30, and December 31 of the year in which they were granted. The total compensation expense related to these shares is $257 and $270, respectively, and is recorded as the shares vest.

The following table summarizes the activity related to unvested shares of restricted stock for the three months ended March 31, 2019:

The total fair value of the shares that vested during the three months ended March 31, 2019 and 2018 was $239 and $169, respectively, as of the vesting dates of these shares.

Stock Options

We record compensation expense for stock options based on the fair market value of the options as of the grant date. No option may be granted with an exercise period in excess of ten years from the date of grant. Generally, stock options will be granted with an exercise price equal to the fair market value of our stock on the date of grant and will vest over four years.

The fair value for stock options granted during the three months ended March 31, 2019 and 2018 was estimated at the date of grant using the Black-Scholes option pricing model with the following weighted average assumptions:

The per share weighted average fair value of stock options issued during the three months ended March 31, 2019 and 2018 was $3.13 and $3.61, respectively.

The following table summarizes the activity related to stock options for the three months ended March 31, 2019:

We have defined contribution 401(k) plans for our employees who work in the U.S. All permanent employees of inTEST Corporation, inTEST EMS LLC, Temptronic Corporation (“Temptronic”) and inTEST Silicon Valley Corporation who are at least 18 years of age are eligible to participate in the inTEST Corporation Incentive Savings Plan. We match employee contributions dollar for dollar up to 10% of the employee's annual compensation, with a maximum limit of $5. Employer contributions vest ratably over four years. Matching contributions are discretionary. For the three months ended March 31, 2019 and 2018, we recorded $190 and $121 of expense for matching contributions, respectively.

All permanent employees of Ambrell are immediately eligible to participate in the Ambrell Corporation Savings & Profit Sharing Plan (the "Ambrell Plan") upon employment and are eligible for employer matching contributions after completing one year of service, as defined in the Ambrell Plan. The Ambrell Plan allows eligible employees to make voluntary contributions up to 100% of compensation, up to the federal government contribution limits. We will make a matching contribution of 25% of each employee's contributions up to a maximum of 2% of such employee's annual compensation. For the three months ended March 31, 2019 and 2018, we made matching contributions of $23 and $26, respectively.

We have two reportable segments, which are also our reporting units, Thermal and EMS. Thermal includes the operations of Temptronic, Thermonics, Sigma, inTEST Thermal Solutions GmbH (Germany), inTEST Pte, Limited (Singapore) and Ambrell. Sales of this segment consist primarily of temperature management systems which we design, manufacture and market under our Temptronic, Thermonics and Sigma product lines, and precision induction heating systems which are designed, manufactured and marketed by Ambrell. In addition, this segment provides post-warranty service and support. EMS includes the operations of our manufacturing facilities in Mt. Laurel, New Jersey and Fremont, California. Sales of this segment consist primarily of manipulator, docking hardware and tester interface products, which we design, manufacture and market.

We operate our business worldwide and sell our products both domestically and internationally. Both of our segments sell to semiconductor manufacturers, third-party test and assembly houses and ATE manufacturers. Thermal also sells into a variety of markets outside of the ATE market, including the automotive, consumer electronics, consumer product packaging, defense/aerospace, energy, fiber optics, industrial, telecommunications and other markets. 

The following table provides information about our geographic areas of operation. Net revenues from unaffiliated customers are based on the location to which the goods are shipped.

On April 8, 2019, we executed an amendment to the lease for our facility in Mansfield, Massachusetts which extended the term of the lease for an additional forty months to December 31, 2024, and expanded the amount of leased space by approximately 6,100 square feet. The current rate per square foot which is in place through August 31, 2021 (the original expiration date of the lease) did not change. After August 31, 2021, there are predetermined fixed escalations of the rate as outlined in the amendment. At the effective date of this modification, we will record an increase in our ROU assets and operating lease liabilities of approximately $1,831.