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Financial Instruments | 12 Months Ended
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Dec. 31, 2018
Financial Instruments | G. FINANCIAL INSTRUMENTS Cash Equivalents Teradyne considers all highly liquid investments with maturities of three months or less at the date of acquisition to be cash equivalents. Marketable Securities Effective January 1, 2018, Teradyne adopted ASU 2016-01, “ Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities, ” using the modified retrospective approach. This guidance requires that changes in fair value of equity securities be accounted for directly in earnings. Prior to 2018, the changes in fair value of equity securities were recorded in accumulated other comprehensive income (loss) on the balance sheet. Teradyne’s available-for-sale debt securities are classified as Level 2 and equity securities are classified as Level 1. Contingent consideration is classified as Level 3. The vast majority of Level 2 securities are fixed income securities priced by third party pricing vendors. These pricing vendors utilize the most recent observable market information in pricing these securities or, if specific prices are not available, use other observable inputs like market transactions involving identical or comparable securities. During the years ended December 31, 2018 and 2017, there were no transfers in or out of Level 1, Level 2, or Level 3 financial instruments. Realized gains recorded in 2018, 2017, and 2016 were $4.0 million, $1.1 million, and $1.6 million, respectively. Realized losses recorded in 2018, 2017, and 2016 were $1.6 million, $0.3 million, and $0.5 million, respectively. Realized gains are included in interest income and realized losses are included in interest expense. Unrealized gains and losses on available-for-sale debt securities are included in accumulated other comprehensive income (loss) on the balance sheet. Unrealized gains related to equity securities are included in interest income and unrealized losses are included in interest expense. Unrealized losses related to equity securities recognized in 2018 were $6.0 million. The cost of securities sold is based on the specific identification method. The following table sets forth by fair value hierarchy Teradyne’s financial assets and liabilities that were measured at fair value on a recurring basis as of December 31, 2018 and 2017:
|  | December 31, 2018 |
|  | Quoted Prices in Active Markets for Identical Instruments (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |  |  | Total |
|  | (in thousands) |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash |  | $ | 312,512 |  |  | $ | — |  |  | $ | — |  |  | $ | 312,512 |
Cash equivalents |  |  | 253,525 |  |  |  | 360,715 |  |  |  | — |  |  |  | 614,240 |
Available for sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  |  | — |  |  |  | 109,721 |  |  |  | — |  |  |  | 109,721 |
Commercial paper |  |  | — |  |  |  | 86,117 |  |  |  | — |  |  |  | 86,117 |
Corporate debt securities |  |  | — |  |  |  | 40,020 |  |  |  | — |  |  |  | 40,020 |
U.S. government agency securities |  |  | — |  |  |  | 9,611 |  |  |  | — |  |  |  | 9,611 |
Certificates of deposit and time deposits |  |  | — |  |  |  | 7,604 |  |  |  | — |  |  |  | 7,604 |
Debt mutual funds |  |  | 3,187 |  |  |  | — |  |  |  | — |  |  |  | 3,187 |
Non-U.S. government securities |  |  | — |  |  |  | 376 |  |  |  | — |  |  |  | 376 |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mutual funds |  |  | 21,191 |  |  |  | — |  |  |  | — |  |  |  | 21,191 |
|  |  | 590,415 |  |  |  | 614,164 |  |  |  | — |  |  |  | 1,204,579 |
Derivative assets |  |  | — |  |  |  | 79 |  |  |  | — |  |  |  | 79 |
Total |  | $ | 590,415 |  |  | $ | 614,243 |  |  | $ | — |  |  | $ | 1,204,658 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration |  | $ | — |  |  | $ | — |  |  | $ | 70,543 |  |  | $ | 70,543 |
Derivative liabilities |  |  | — |  |  |  | 514 |  |  |  | — |  |  |  | 514 |
Total |  | $ | — |  |  | $ | 514 |  |  | $ | 70,543 |  |  | $ | 71,057 |
Reported as follows:
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
|  | (in thousands) |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 566,037 |  |  | $ | 360,715 |  |  | $ | — |  |  | $ | 926,752 |
Marketable securities |  |  | — |  |  |  | 190,096 |  |  |  | — |  |  |  | 190,096 |
Long-term marketable securities |  |  | 24,378 |  |  |  | 63,353 |  |  |  | — |  |  |  | 87,731 |
Prepayments |  |  | — |  |  |  | 79 |  |  |  | — |  |  |  | 79 |
Total |  | $ | 590,415 |  |  | $ | 614,243 |  |  | $ | — |  |  | $ | 1,204,658 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other current liabilities |  | $ | — |  |  | $ | 514 |  |  | $ | — |  |  | $ | 514 |
Contingent consideration |  |  | — |  |  |  | — |  |  |  | 34,865 |  |  |  | 34,865 |
Long-term contingent consideration |  |  | — |  |  |  | — |  |  |  | 35,678 |  |  |  | 35,678 |
Total |  | $ | — |  |  | $ | 514 |  |  | $ | 70,543 |  |  | $ | 71,057 |
|  | December 31, 2017 |
|  | Quoted Prices in Active Markets for Identical Instruments (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |  |  | Total |
|  | (in thousands) |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash |  | $ | 197,955 |  |  | $ | — |  |  | $ | — |  |  | $ | 197,955 |
Cash equivalents |  |  | 206,335 |  |  |  | 25,553 |  |  |  | — |  |  |  | 231,888 |
Available for sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  |  | — |  |  |  | 855,795 |  |  |  | — |  |  |  | 855,795 |
Commercial paper |  |  | — |  |  |  | 282,840 |  |  |  | — |  |  |  | 282,840 |
Certificates of deposit and time deposits |  |  | — |  |  |  | 167,342 |  |  |  | — |  |  |  | 167,342 |
Corporate debt securities |  |  | — |  |  |  | 133,186 |  |  |  | — |  |  |  | 133,186 |
Equity and debt mutual funds |  |  | 23,430 |  |  |  | — |  |  |  | — |  |  |  | 23,430 |
U.S. government agency securities |  |  | — |  |  |  | 10,726 |  |  |  | — |  |  |  | 10,726 |
Non-U.S. government securities |  |  | — |  |  |  | 586 |  |  |  | — |  |  |  | 586 |
|  |  | 427,720 |  |  |  | 1,476,028 |  |  |  | — |  |  |  | 1,903,748 |
Derivative assets |  |  | — |  |  |  | 389 |  |  |  | — |  |  |  | 389 |
Total |  | $ | 427,720 |  |  | $ | 1,476,417 |  |  | $ | — |  |  | $ | 1,904,137 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration |  | $ | — |  |  | $ | — |  |  | $ | 45,102 |  |  | $ | 45,102 |
Derivative liabilities |  |  | — |  |  |  | 446 |  |  |  | — |  |  |  | 446 |
Total |  | $ | — |  |  | $ | 446 |  |  | $ | 45,102 |  |  | $ | 45,548 |
Reported as follows:
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
|  | (in thousands) |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 404,290 |  |  | $ | 25,553 |  |  | $ | — |  |  | $ | 429,843 |
Marketable securities |  |  | — |  |  |  | 1,347,979 |  |  |  | — |  |  |  | 1,347,979 |
Long-term marketable securities |  |  | 23,430 |  |  |  | 102,496 |  |  |  | — |  |  |  | 125,926 |
Prepayments |  |  | — |  |  |  | 389 |  |  |  | — |  |  |  | 389 |
|  | $ | 427,720 |  |  | $ | 1,476,417 |  |  | $ | — |  |  | $ | 1,904,137 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other current liabilities |  | $ | — |  |  | $ | 446 |  |  | $ | — |  |  | $ | 446 |
Contingent consideration |  |  | — |  |  |  | — |  |  |  | 24,497 |  |  |  | 24,497 |
Long-term contingent consideration |  |  | — |  |  |  | — |  |  |  | 20,605 |  |  |  | 20,605 |
|  | $ | — |  |  | $ | 446 |  |  | $ | 45,102 |  |  | $ | 45,548 |
Changes in the fair value of Level 3 contingent consideration for the years ended December 31, 2018 and 2017 were as follows:
|  | Contingent Consideration |
|  | (in thousands) |
Balance at December 31, 2016 |  | $ | 38,332 |
Payments (1) |  |  | (1,050 | )
Fair value adjustment (2) |  |  | 7,820 |
Balance at December 31, 2017 |  |  | 45,102 |
Acquisition of MiR |  |  | 52,547 |
Foreign currency impact |  |  | (3,540 | )
Payments (3) |  |  | (24,553 | )
Fair value adjustment (4) |  |  | 987 |
Balance at December 31, 2018 |  | $ | 70,543 |
(1) | During the year ended December 31, 2017, Teradyne paid $1.1 million of contingent consideration for the earn-out in connection with the acquisition of Avionics Interface Technologies, LLC (“AIT”).
(2) | During the year ended December 31, 2017, the fair value of contingent consideration for the earn-out in connection with the acquisition of Universal Robots was increased by $7.8 million primarily due to an increase in forecasted revenues and decrease in discount rate.
(3) | During the year ended December 31, 2018, Teradyne paid $24.6 million of contingent consideration for the earn-out in connection with the acquisition of Universal Robots.
(4) | During the year ended December 31, 2018, the fair value of contingent consideration for the earn-out in connection with the acquisition of MiR was increased by $ 17.7 million primarily due to an increase in forecasted revenues. During the year ended December 31, 2018, the fair value of contingent consideration for the earn-out in connection with the acquisition of Universal Robots was decreased by $ 16.7 million primarily due to a decrease in forecasted revenues.
The following table provides quantitative information associated with the fair value measurement of Teradyne’s Level 3 financial instrument:
Liability |  | December 31, 2018 Fair Value |  |  | Valuation Technique |  |  | Unobservable Inputs |  |  | Weighted Average |
|  | (in thousands) |  |  |  |  |  |  |  |  |  |
Contingent consideration (MiR) |  | $ | 66,672 | (1) |  |  | Monte Carlo simulation |  |  | Revenue volatility |  |  |  | 18.0 | %
|  |  |  |  |  |  |  |  |  | Discount rate |  |  |  | 1.1 | %
Contingent consideration (Universal Robots) |  | $ | 3,871 | (1) |  |  |  |  |  |  |  |  |  |  |
(1) | Contingent consideration related to MiR and Universal Robots acquisitions of $31.0 million and $3.9 million, respectively, is expected to be paid in March 2019.
As of December 31, 2018, the significant unobservable inputs used in the Monte Carlo simulation to fair value the MiR contingent consideration include forecasted revenues, revenue volatility, earnings before interest and taxes and discount rate. Increases or decreases in the inputs would result in a higher or lower fair value measurement. As of December 31, 2018, the maximum amount of contingent consideration that could be paid in connection with the acquisition of MiR is $115 million. The earn-out periods end on December 31, 2018, December 31, 2019, and December 31, 2020. The carrying amounts and fair values of Teradyne’s financial instruments at December 31, 2018 and 2017 were as follows:
|  | December 31, 2018 |  |  | December 31, 2017 |
|  | Carrying Value |  |  | Fair Value |  |  | Carrying Value |  |  | Fair Value |
|  | (in thousands) |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 926,752 |  |  | $ | 926,752 |  |  | $ | 429,843 |  |  | $ | 429,843 |
Marketable securities |  |  | 277,827 |  |  |  | 277,827 |  |  |  | 1,473,905 |  |  |  | 1,473,905 |
Derivative assets |  |  | 79 |  |  |  | 79 |  |  |  | 389 |  |  |  | 389 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration |  |  | 70,543 |  |  |  | 70,543 |  |  |  | 45,102 |  |  |  | 45,102 |
Derivative liabilities |  |  | 514 |  |  |  | 514 |  |  |  | 446 |  |  |  | 446 |
Convertible debt (1) |  |  | 379,981 |  |  |  | 547,113 |  |  |  | 365,987 |  |  |  | 659,525 |
(1) | The carrying value represents the bifurcated debt component only, while the fair value is based on quoted market prices for the convertible note which includes the equity conversion features.
The fair values of accounts receivable, net and accounts payable approximate the carrying amount due to the short term nature of these instruments. The following tables summarize the composition of available-for-sale marketable securities at December 31, 2018 and 2017:
|  | December 31, 2018 |
|  | Available-for-Sale |  |  | Fair Market |
|  | Cost |  |  | Unrealized Gain |  |  | Unrealized (Loss) |  |  | Fair Market Value |  |  | Value of Investments with Unrealized Losses |
|  | (in thousands) |
U.S. Treasury securities |  | $ | 110,969 |  |  | $ | 112 |  |  | $ | (1,360 | ) |  | $ | 109,721 |  |  | $ | 75,040 |
Commercial paper |  |  | 86,130 |  |  |  | 13 |  |  |  | (26 | ) |  |  | 86,117 |  |  |  | 85,094 |
Corporate debt securities |  |  | 41,133 |  |  |  | 432 |  |  |  | (1,545 | ) |  |  | 40,020 |  |  |  | 24,767 |
U.S. government agency securities |  |  | 9,646 |  |  |  | 1 |  |  |  | (36 | ) |  |  | 9,611 |  |  |  | 7,077 |
Certificates of deposit and time deposits |  |  | 7,604 |  |  |  | — |  |  |  | — |  |  |  | 7,604 |  |  |  | — |
Debt mutual funds |  |  | 3,153 |  |  |  | 34 |  |  |  | — |  |  |  | 3,187 |  |  |  | — |
Non-U.S. government securities |  |  | 376 |  |  |  | — |  |  |  | — |  |  |  | 376 |  |  |  | — |
|  | $ | 259,011 |  |  | $ | 592 |  |  | $ | (2,967 | ) |  | $ | 256,636 |  |  | $ | 191,978 |
Reported as follows:
|  | Cost |  |  | Unrealized Gain |  |  | Unrealized (Loss) |  |  | Fair Market Value |  |  | Fair Market Value of Investments with Unrealized Losses |
|  | (in thousands) |
Marketable securities |  | $ | 190,100 |  |  | $ | 88 |  |  | $ | (92 | ) |  | $ | 190,096 |  |  | $ | 140,262 |
Long-term marketable securities |  |  | 68,911 |  |  |  | 504 |  |  |  | (2,875 | ) |  |  | 66,540 |  |  |  | 51,716 |
|  | $ | 259,011 |  |  | $ | 592 |  |  | $ | (2,967 | ) |  | $ | 256,636 |  |  | $ | 191,978 |
|  | December 31, 2017 |
|  | Available-for-Sale |  |  |  |
|  | Cost |  |  | Unrealized Gain |  |  | Unrealized (Loss) |  |  | Fair Market Value |  |  | Fair Market Value of Investments with Unrealized Losses |
|  | (in thousands) |
U.S. Treasury securities |  | $ | 858,258 |  |  | $ | 72 |  |  | $ | (2,535 | ) |  | $ | 855,795 |  |  | $ | 850,163 |
Commercial paper |  |  | 283,009 |  |  |  | 18 |  |  |  | (187 | ) |  |  | 282,840 |  |  |  | 258,933 |
Certificates of deposit and time deposits |  |  | 167,523 |  |  |  | 6 |  |  |  | (187 | ) |  |  | 167,342 |  |  |  | 138,340 |
Corporate debt securities |  |  | 131,179 |  |  |  | 2,380 |  |  |  | (373 | ) |  |  | 133,186 |  |  |  | 91,010 |
Equity and debt mutual funds |  |  | 19,403 |  |  |  | 4,102 |  |  |  | (75 | ) |  |  | 23,430 |  |  |  | 1,723 |
U.S. government agency securities |  |  | 10,775 |  |  |  | — |  |  |  | (49 | ) |  |  | 10,726 |  |  |  | 10,727 |
Non-U.S. government securities |  |  | 582 |  |  |  | 4 |  |  |  | — |  |  |  | 586 |  |  |  | — |
|  | $ | 1,470,729 |  |  | $ | 6,582 |  |  | $ | (3,406 | ) |  | $ | 1,473,905 |  |  | $ | 1,350,896 |
Reported as follows:
|  | Cost |  |  | Unrealized Gain |  |  | Unrealized (Loss) |  |  | Fair Market Value |  |  | Fair Market Value of Investments with Unrealized Losses |
|  | (in thousands) |
Marketable securities |  | $ | 1,349,970 |  |  | $ | 38 |  |  | $ | (2,029 | ) |  | $ | 1,347,979 |  |  | $ | 1,288,844 |
Long-term marketable securities |  |  | 120,759 |  |  |  | 6,544 |  |  |  | (1,377 | ) |  |  | 125,926 |  |  |  | 62,052 |
|  | $ | 1,470,729 |  |  | $ | 6,582 |  |  | $ | (3,406 | ) |  | $ | 1,473,905 |  |  | $ | 1,350,896 |
As of December 31, 2018, the fair market value of investments with unrealized losses totaled $192.0 million. Of this value, $28.5 million had unrealized losses of $1.6 million greater than one year and $163.5 million had unrealized losses of $1.4 million for less than one year. As of December 31, 2017, the fair market value of investments with unrealized losses totaled $1,350.9 million. Of this value, $141.0 million had unrealized losses of $1.2 million greater than one year and $1,209.9 million had unrealized losses of $2.2 million for less than one year. Teradyne reviews its investments to identify and evaluate investments that have an indication of possible impairment. Based on this review, Teradyne determined that the unrealized losses related to these investments at December 31, 2018 and 2017, were temporary. The contractual maturities of investments in available-for-sale marketable securities held at December 31, 2018 were as follows:
|  | Cost |  |  | Fair Value |
|  | (in thousands) |
Due within one year |  | $ | 190,100 |  |  | $ | 190,096 |
Due after 1 year through 5 years |  |  | 9,199 |  |  |  | 9,144 |
Due after 5 years through 10 years |  |  | 14,081 |  |  |  | 13,405 |
Due after 10 years |  |  | 42,478 |  |  |  | 40,804 |
Total |  | $ | 255,858 |  |  | $ | 253,449 |
Contractual maturities of investments is available-for-sale marketable securities held at December 31, 2018 exclude $ 3.2 million of debt mutual funds as they do not have a contractual maturity date. Derivatives Teradyne conducts business in a number of foreign countries, with certain transactions denominated in local currencies. The purpose of Teradyne’s foreign currency management is to minimize the effect of exchange rate fluctuations on certain foreign currency denominated monetary assets and liabilities. Teradyne does not use derivative financial instruments for trading or speculative purposes. To minimize the effect of exchange rate fluctuations associated with the remeasurement of monetary assets and liabilities denominated in foreign currencies, Teradyne enters into foreign currency forward contracts. The change in fair value of these derivatives is recorded directly in earnings, and is used to offset the change in value of the monetary assets and liabilities denominated in foreign currencies. At December 31, 2018 and 2017, Teradyne had the following contracts to buy and sell non-U.S. currencies for U.S. dollars and other non-U.S. currencies with the following notional amounts:
|  | December 31, 2018 |  |  |  | December 31, 2017 |
|  | Buy Position |  |  |  | Sell Position |  |  |  | Net Total |  |  |  | Buy Position |  |  |  | Sell Position |  |  |  | Net Total |
|  | (in millions) |
Japanese Yen |  | $ | (35.0 | ) |  |  | $ | — |  |  |  | $ | (35.0 | ) |  |  | $ | (35.7 | ) |  |  | $ | — |  |  |  | $ | (35.7 | )
Taiwan Dollar |  |  | (11.2 | ) |  |  |  | — |  |  |  |  | (11.2 | ) |  |  |  | (9.9 | ) |  |  |  | — |  |  |  |  | (9.9 | )
Korean Won |  |  | (9.6 | ) |  |  |  | — |  |  |  |  | (9.6 | ) |  |  |  | (8.9 | ) |  |  |  | — |  |  |  |  | (8.9 | )
British Pound Sterling |  |  | (1.4 | ) |  |  |  | — |  |  |  |  | (1.4 | ) |  |  |  | (1.4 | ) |  |  |  | — |  |  |  |  | (1.4 | )
Euro |  |  | — |  |  |  |  | 82.2 |  |  |  |  | 82.2 |  |  |  |  | — |  |  |  |  | 27.4 |  |  |  |  | 27.4 |
Singapore Dollar |  |  | — |  |  |  |  | 15.7 |  |  |  |  | 15.7 |  |  |  |  | — |  |  |  |  | 33.5 |  |  |  |  | 33.5 |
Philippine Peso |  |  | — |  |  |  |  | 5.2 |  |  |  |  | 5.2 |  |  |  |  | — |  |  |  |  | — |  |  |  |  | — |
Chinese Yuan |  |  | — |  |  |  |  | 2.8 |  |  |  |  | 2.8 |  |  |  |  | — |  |  |  |  | — |  |  |  |  | — |
Total |  | $ | (57.2 | ) |  |  | $ | 105.9 |  |  |  | $ | 48.7 |  |  |  | $ | (55.9 | ) |  |  | $ | 60.9 |  |  |  | $ | 5.0 |
The fair value of the outstanding contracts was a loss of $0.4 million and $0.1 million, respectively, at December 31, 2018 and 2017. Gains and losses on foreign currency forward contracts and foreign currency remeasurement gains and losses on monetary assets and liabilities are included in other (income) expense, net. The following table summarizes the fair value of derivative instruments as of December 31, 2018 and 2017:
|  | Balance Sheet Location |  |  | December 31, 2018 |  |  | December 31, 2017 |
|  |  |  |  | (in thousands) |
Derivatives not designated as hedging instruments: |  |  |  |  |  |  |  |  |  |  |
Foreign exchange contracts |  | Prepayments |  |  | $ | 79 |  |  | $ | 389 |
Foreign exchange contracts |  | Other current liabilities |  |  |  | (514 | ) |  |  | (446 | )
Total derivatives |  |  |  |  |  | $ | (435 | ) |  | $ | (57 | )
The following table summarizes the effect of derivative instruments in the statements of operations recognized for the years ended December 31, 2018, 2017, and 2016.
|  | Location of (Gains) Losses Recognized in Statement of Operations |  |  | 2018 |  |  | 2017 |  |  | 2016 |
|  |  |  |  | (in thousands) |
Derivatives not designated as hedging instruments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign exchange contracts |  | Other (income) expense, net |  |  | $ | 7,257 |  |  | $ | (1,133 | ) |  | $ | 8,671 |
(1) | The table does not reflect the corresponding gains and losses from the remeasurement of the monetary assets and liabilities denominated in foreign currencies.
(2) | For the years ended December 31, 2018 and 2016, net gains from the remeasurement of monetary assets and liabilities denominated in foreign currencies were $2.4 million and $8.0 million, respectively.
(3) | For the year ended December 31, 2017, net losses from the remeasurement of monetary assets and liabilities denominated in foreign currencies were $2.9 million.
See Note H: “Debt” regarding derivatives related to the convertible senior notes. Concentration of Credit Risk Financial instruments which potentially subject Teradyne to concentrations of credit risk consist principally of cash equivalents, marketable securities, forward currency contracts and accounts receivable. Teradyne’s cash equivalents consist primarily of money market funds invested in U.S. Treasuries and government agencies. Teradyne’s fixed income available-for-sale marketable securities have a minimum rating of AA by one or more of the major credit rating agencies. Teradyne places foreign currency forward contracts with high credit-quality financial institutions in order to minimize credit risk exposure. Concentrations of credit risk with respect to accounts receivable are limited due to the large number of geographically dispersed customers. Teradyne performs ongoing credit evaluations of its customers’ financial condition and from time to time may require customers to provide a letter of credit from a bank to secure accounts receivable. There were no customers who accounted for more than 10% of Teradyne’s accounts receivable balance as of December 31, 2018 and December 31, 2017.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -URI http://asc.fasb.org/topic&trid=2155941 + Details
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