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Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2014
Schedule of Fair Value of Financial Assets and Liabilities Measured on Recurring Basis | 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, 2014 and 2013.
|  | December 31, 2014 |
|  | 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 |  | $ | 111,471 |  |  | $ | — |  |  | $ | — |  |  | $ | 111,471 |
Cash equivalents |  |  | 160,218 |  |  |  | 22,567 |  |  |  | — |  |  |  | 182,785 |
Available for sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  |  | — |  |  |  | 402,154 |  |  |  | — |  |  |  | 402,154 |
U.S. government agency securities |  |  | — |  |  |  | 258,502 |  |  |  | — |  |  |  | 258,502 |
Corporate debt securities |  |  | — |  |  |  | 141,467 |  |  |  | — |  |  |  | 141,467 |
Commercial paper |  |  | — |  |  |  | 140,638 |  |  |  | — |  |  |  | 140,638 |
Certificates of deposit and time deposits |  |  | — |  |  |  | 49,036 |  |  |  | — |  |  |  | 49,036 |
Equity and debt mutual funds |  |  | 12,333 |  |  |  | — |  |  |  | — |  |  |  | 12,333 |
Non-U.S. government securities |  |  | — |  |  |  | 446 |  |  |  | — |  |  |  | 446 |
Total |  | $ | 284,022 |  |  | $ | 1,014,810 |  |  | $ | — |  |  | $ | 1,298,832 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration |  | $ | — |  |  | $ | — |  |  | $ | 3,350 |  |  | $ | 3,350 |
Derivatives |  |  | — |  |  |  | 149 |  |  |  | — |  |  |  | 149 |
Total |  | $ | — |  |  | $ | 149 |  |  | $ | 3,350 |  |  | $ | 3,499 |
Reported as follows:
|  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |  |  | Total |
|  | (in thousands) |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 271,689 |  |  | $ | 22,567 |  |  | $ | — |  |  | $ | 294,256 |
Marketable securities |  |  | — |  |  |  | 533,787 |  |  |  | — |  |  |  | 533,787 |
Long-term marketable securities |  |  | 12,333 |  |  |  | 458,456 |  |  |  | — |  |  |  | 470,789 |
|  | $ | 284,022 |  |  | $ | 1,014,810 |  |  | $ | — |  |  | $ | 1,298,832 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other current liabilities |  | $ | — |  |  | $ | 149 |  |  | $ | 1,750 |  |  | $ | 1,899 |
Long-term other accrued liabilities |  |  | — |  |  |  | — |  |  |  | 1,600 |  |  |  | 1,600 |
|  | $ | — |  |  | $ | 149 |  |  | $ | 3,350 |  |  |  | 3,499 |
|  | December 31, 2013 |
|  | 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 |  | $ | 117,242 |  |  | $ | — |  |  | $ | — |  |  | $ | 117,242 |
Cash equivalents |  |  | 165,865 |  |  |  | 58,531 |  |  |  | — |  |  |  | 224,396 |
Available for sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  |  | — |  |  |  | 467,895 |  |  |  | — |  |  |  | 467,895 |
U.S. government agency securities |  |  | — |  |  |  | 202,588 |  |  |  | — |  |  |  | 202,588 |
Commercial paper |  |  | — |  |  |  | 105,598 |  |  |  | — |  |  |  | 105,598 |
Corporate debt securities |  |  | — |  |  |  | 65,387 |  |  |  | — |  |  |  | 65,387 |
Equity and debt mutual funds |  |  | 13,156 |  |  |  | — |  |  |  | — |  |  |  | 13,156 |
Certificates of deposit and time deposits |  |  | — |  |  |  | 3,258 |  |  |  | — |  |  |  | 3,258 |
Non-U.S. government securities |  |  | — |  |  |  | 78 |  |  |  | — |  |  |  | 78 |
Total |  |  | 296,263 |  |  |  | 903,335 |  |  |  | — |  |  |  | 1,199,598 |
Derivatives |  |  | — |  |  |  | 153 |  |  |  | — |  |  |  | 153 |
Total |  | $ | 296,263 |  |  | $ | 903,488 |  |  | $ | — |  |  | $ | 1,199,751 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration |  | $ | — |  |  | $ | — |  |  | $ | 2,230 |  |  | $ | 2,230 |
Total |  | $ | — |  |  | $ | — |  |  | $ | 2,230 |  |  | $ | 2,230 |
Reported as follows:
|  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |  |  | Total |
|  | (in thousands) |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 283,107 |  |  | $ | 58,531 |  |  | $ | — |  |  | $ | 341,638 |
Marketable securities |  |  | — |  |  |  | 586,882 |  |  |  | — |  |  |  | 586,882 |
Long-term marketable securities |  |  | 13,156 |  |  |  | 257,922 |  |  |  | — |  |  |  | 271,078 |
Other current assets |  |  | — |  |  |  | 153 |  |  |  | — |  |  |  | 153 |
|  | $ | 296,263 |  |  | $ | 903,488 |  |  | $ | — |  |  | $ | 1,199,751 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term other accrued liabilities |  | $ | — |  |  | $ | — |  |  | $ | 2,230 |  |  | $ | 2,230 |
|  | $ | — |  |  | $ | — |  |  | $ | 2,230 |  |  | $ | 2,230 |
Schedule of Changes in Fair Value of Level 3 Contingent Consideration | Changes in the fair value of Level 3 contingent consideration for the years ended December 31, 2014 and 2013 were as follows:
|  | Contingent Consideration |
|  | (in thousands) |
Balance at December 31, 2012 |  | $ | 388 |
Acquisition of ZTEC |  |  | 2,230 |
Payments |  |  | (388 | )
Balance at December 31, 2013 |  |  | 2,230 |
Fair value adjustment |  |  | (630 | )
Acquisition of AIT |  |  | 1,750 |
Balance at December 31, 2014 |  | $ | 3,350 |
Quantitative Information Associated With Fair Value Measurement of Level 3 Financial Instrument | The following table provides quantitative information associated with the fair value measurement of Teradyne’s Level 3 financial instrument:
Liability |  | December 31, 2014 Fair Value |  | Valuation Technique |  | Unobservable Inputs |  | Weighted Average
|  | (in thousands) |  |  |  |  |  |
Contingent consideration (ZTEC) |  | $1,600 |  | Income approach- discounted cash flow |  | Revenue earn-out-probability for calendar year 2015 revenue. |  | 0%
|  |  |  | Customer orders-probability of achievement during earn out period (acquisition date through December 31, 2015) |  | 40%
|  |  |  |  |  | Discount rate for revenue earn-out |  | N/A
|  |  |  |  |  | Discount rate for customer orders |  | 5.2%
Schedule of Carrying Amounts and Fair Values of Financial Instruments | The carrying amounts and fair values of financial instruments at December 31, 2014 and 2013 were as follows:
|  | December 31, 2014 |  |  | December 31, 2013 |
|  | Carrying Value |  |  | Fair Value |  |  | Carrying Value |  |  | Fair Value |
|  | (in thousands) |
Cash and cash equivalents |  | $ | 294,256 |  |  | $ | 294,256 |  |  | $ | 341,638 |  |  | $ | 341,638 |
Marketable securities |  |  | 1,004,576 |  |  |  | 1,004,576 |  |  |  | 857,960 |  |  |  | 857,960 |
Convertible debt (1) |  |  | — |  |  |  | — |  |  |  | 185,708 |  |  |  | 611,433 |
Japan loan |  |  | — |  |  |  | — |  |  |  | 955 |  |  |  | 955 |
(1) | The carrying value represented the bifurcated debt component only, while the fair value was based on quoted market prices for the convertible note which included the equity conversion feature.
Schedule of Available-for-Sale Marketable Securities | The following tables summarize the composition of available for sale marketable securities at December 31, 2014 and 2013:
|  | December 31, 2014 |
|  | Available-for-Sale |  |  | Fair Market Value of Investments with Unrealized Losses |
|  | Cost |  |  | Unrealized Gain |  |  | Unrealized (Loss) |  |  | Fair Market Value |  |
|  | (in thousands) |
U.S. Treasury securities |  | $ | 402,197 |  |  | $ | 362 |  |  | $ | (405 | ) |  | $ | 402,154 |  |  | $ | 317,771 |
U.S. government agency securities |  |  | 258,452 |  |  |  | 135 |  |  |  | (85 | ) |  |  | 258,502 |  |  |  | 104,642 |
Corporate debt securities |  |  | 139,374 |  |  |  | 2,414 |  |  |  | (321 | ) |  |  | 141,467 |  |  |  | 96,998 |
Commercial paper |  |  | 140,616 |  |  |  | 26 |  |  |  | (4 | ) |  |  | 140,638 |  |  |  | 41,747 |
Certificates of deposit and time deposits |  |  | 49,048 |  |  |  | 11 |  |  |  | (23 | ) |  |  | 49,036 |  |  |  | 20,684 |
Equity and debt mutual funds |  |  | 10,492 |  |  |  | 1,870 |  |  |  | (29 | ) |  |  | 12,333 |  |  |  | 1,234 |
Non-U.S. government securities |  |  | 446 |  |  |  | — |  |  |  | — |  |  |  | 446 |  |  |  | — |
|  | $ | 1,000,625 |  |  | $ | 4,818 |  |  | $ | (867 | ) |  | $ | 1,004,576 |  |  | $ | 583,076 |
Reported as follows:
|  | Cost |  |  | Unrealized Gain |  |  | Unrealized (Loss) |  |  | Fair Market Value |  |  | Fair Market Value of Investments with Unrealized Losses |
|  | (in thousands) |
Marketable securities |  | $ | 533,833 |  |  | $ | 99 |  |  | $ | (145 | ) |  | $ | 533,787 |  |  | $ | 240,234 |
Long-term marketable securities |  |  | 466,792 |  |  |  | 4,719 |  |  |  | (722 | ) |  |  | 470,789 |  |  |  | 342,842 |
|  | $ | 1,000,625 |  |  | $ | 4,818 |  |  | $ | (867 | ) |  | $ | 1,004,576 |  |  | $ | 583,076 |
|  | December 31, 2013 |
|  | Available-for-Sale |  |  | Fair Market Value of Investments with Unrealized Losses |
|  | Cost |  |  | Unrealized Gain |  |  | Unrealized (Loss) |  |  | Fair Market Value |  |
|  | (in thousands) |
U.S. Treasury securities |  | $ | 468,084 |  |  | $ | 94 |  |  | $ | (283 | ) |  | $ | 467,895 |  |  | $ | 108,212 |
U.S. government agency securities |  |  | 202,573 |  |  |  | 75 |  |  |  | (60 | ) |  |  | 202,588 |  |  |  | 84,498 |
Commercial paper |  |  | 105,583 |  |  |  | 16 |  |  |  | (1 | ) |  |  | 105,598 |  |  |  | 7,993 |
Corporate debt securities |  |  | 65,747 |  |  |  | 762 |  |  |  | (1,122 | ) |  |  | 65,387 |  |  |  | 40,355 |
Equity and debt mutual funds |  |  | 10,463 |  |  |  | 2,742 |  |  |  | (49 | ) |  |  | 13,156 |  |  |  | 702 |
Certificates of deposit and time deposits |  |  | 3,258 |  |  |  | — |  |  |  | — |  |  |  | 3,258 |  |  |  | — |
Non-U.S. government securities |  |  | 78 |  |  |  | — |  |  |  | — |  |  |  | 78 |  |  |  | — |
|  | $ | 855,786 |  |  | $ | 3,689 |  |  | $ | (1,515 | ) |  | $ | 857,960 |  |  | $ | 241,760 |
Reported as follows:
|  | Cost |  |  | Unrealized Gain |  |  | Unrealized (Loss) |  |  | Fair Market Value |  |  | Fair Market Value of Investments with Unrealized Losses |
|  | (in thousands) |
Marketable securities |  | $ | 586,818 |  |  | $ | 85 |  |  | $ | (21 | ) |  | $ | 586,882 |  |  | $ | 137,670 |
Long-term marketable securities |  |  | 268,968 |  |  |  | 3,604 |  |  |  | (1,494 | ) |  |  | 271,078 |  |  |  | 104,090 |
|  | $ | 855,786 |  |  | $ | 3,689 |  |  | $ | (1,515 | ) |  | $ | 857,960 |  |  | $ | 241,760 |
Contractual Maturities of Investments Held | The contractual maturities of investments held at December 31, 2014 were as follows:
|  | Cost |  |  | Fair Value |
|  | (in thousands) |
Due within one year |  | $ | 533,833 |  |  | $ | 533,787 |
Due after 1 year through 5 years |  |  | 418,732 |  |  |  | 418,363 |
Due after 5 years through 10 years |  |  | 5,735 |  |  |  | 5,924 |
Due after 10 years |  |  | 31,833 |  |  |  | 34,169 |
Total |  | $ | 990,133 |  |  | $ | 992,243 |
Assets Measured at Fair Value on Non-Recurring Basis | Assets of Teradyne measured at fair value on a non-recurring basis as of December 31, 2014 are summarized as follows:
|  |  |  |  | Fair Value Measurements at Reporting Period |  |  |  |
|  | December 31, 2014 |  |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Other Unobservable Inputs (Level 3) |  |  | Total Losses |
|  | (in thousands) |
Assets |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | $ | 273,438 |  |  | $ | — |  |  | $ | — |  |  | $ | 273,438 |  |  | $ | 98,897 |
Definite lived intangible assets |  |  | 158,237 |  |  |  | — |  |  |  | — |  |  |  | 158,237 |  |  |  | — |
Long-lived assets held and used |  |  | 10,189 |  |  |  | — |  |  |  | 10,189 |  |  |  | — |  |  |  | — |
|  | $ | 441,864 |  |  | $ | — |  |  | $ | 10,189 |  |  | $ | 431,675 |  |  | $ | 98,897 |
Schedule of Notional Amount of Derivatives | At December 31, 2014 and 2013, 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, 2014 |  |  | December 31, 2013 |
|  | Buy Position |  |  | Sell Position |  |  | Net Total |  |  | Buy Position |  |  | Sell Position |  |  | Net Total |
|  | (in millions) |
Japanese Yen |  | $ | — |  |  | $ | 19.7 |  |  | $ | 19.7 |  |  | $ | — |  |  | $ | 32.6 |  |  | $ | 32.6 |
Taiwan Dollar |  |  | (0.9 | ) |  |  | 5.7 |  |  |  | 4.8 |  |  |  | — |  |  |  | 4.0 |  |  |  | 4.0 |
British Pound Sterling |  |  | — |  |  |  | 11.7 |  |  |  | 11.7 |  |  |  | — |  |  |  | 6.9 |  |  |  | 6.9 |
Korean Won |  |  | — |  |  |  | 4.4 |  |  |  | 4.4 |  |  |  | — |  |  |  | 5.8 |  |  |  | 5.8 |
Euro |  |  | (30.6 | ) |  |  | — |  |  |  | (30.6 | ) |  |  | (24.8 | ) |  |  | 0.7 |  |  |  | (24.1 | )
Total |  | $ | (31.5 | ) |  | $ | 41.5 |  |  | $ | 10.0 |  |  | $ | (24.8 | ) |  | $ | 50.0 |  |  | $ | 25.2 |
Schedule of Derivative Instruments in Statement of Financial Position at Fair Value | The following table summarizes the fair value of derivative instruments as of December 31, 2014 and 2013:
|  | Balance Sheet Location |  | December 31, 2014 |  |  | December 31, 2013 |
|  |  |  | (in thousands) |
Derivatives not designated as hedging instruments: |  |  |  |  |  |  |  |  |  |
Foreign exchange contracts |  | Other current liabilities |  | $ | 149 |  |  | $ | — |
Foreign exchange contracts |  | Other current assets |  |  | — |  |  |  | 153 |
Total derivatives |  |  |  | $ | 149 |  |  | $ | 153 |
Schedule of Effect of Derivative Instruments on Statement of Operations Recognized | The following table summarizes the effect of derivative instruments in the statement of operations recognized for the years ended December 31, 2014, 2013 and 2012. The table does not reflect the corresponding losses from the remeasurement of the monetary assets and liabilities denominated in foreign currencies. For the years ended December 31, 2014, 2013, and 2012, losses from the remeasurement of the monetary assets and liabilities denominated in foreign currencies were $0.9 million, $6.9 million, and $4.5 million, respectively.
|  | Location of Losses (Gains) Recognized in Statement of Operations |  | December 31, 2014 |  |  | December 31, 2013 |  |  | December 31, 2012 |
|  |  |  | (in thousands) |
Derivatives not designated as hedging instruments: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign exchange contracts |  | Other (income) expense, net |  | $ | 237 |  |  | $ | (5,933 | ) |  | $ | (3,974 | )
Total derivatives |  |  |  | $ | 237 |  |  | $ | (5,933 | ) |  | $ | (3,974 | )

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- Definition Tabular disclosure of the effective portion of the gains and losses on derivative instruments designated (and non-derivative instruments) designated and qualifying in cash flow hedges and net investment hedges that was recognized in other comprehensive income (loss) during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 + Details
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- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624163-113959 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19190-110258 + Details
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- Definition Tabular disclosure of the notional amounts of outstanding derivative positions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959 + Details
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