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Derivative Financial Instruments (Tables) | 6 Months Ended
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Jun. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of Fair Values of Derivative Assets and Liabilities | The fair values of derivative assets and liabilities, net, all of which are classified as Level 2 and are reported within either ‘Prepaid expenses and other assets’ or ‘Accrued expenses and other liabilities’ in the condensed consolidated balance sheets, were:
| June 30, 2018 |  | December 31, 2017
| Derivative Assets |  | Derivative Liabilities |  | Derivative Assets |  | Derivative Liabilities
| (in thousands)
Forward foreign currency exchange contracts | $ | 2,439 |  |  | $ | (2,561 | ) |  | $ | 1,241 |  |  | $ | (1,647 | )
Netting of counterparty contracts | (2,439 | ) |  | 2,439 |  |  | (1,241 | ) |  | 1,241 |
Foreign currency forward contract derivatives | $ | — |  |  | $ | (122 | ) |  | $ | — |  |  | $ | (406 | )
Summary of Derivative Financial Instruments Notional Amounts on Outstanding Positions | The notional amounts of outstanding foreign currency forward exchange contracts presented below report the total U.S. Dollar equivalent position and the net contract fair values for each foreign currency position.
| June 30, 2018 |  | December 31, 2017
| Notional |  | Fair Value |  | Notional |  | Fair Value
| (in thousands)
Singapore Dollar | $ | 44,299 |  |  | $ | (1,036 | ) |  | $ | 73,455 |  |  | $ | 364 |
Euro | 26,207 |  |  | 342 |  |  | 37,718 |  |  | (122 | )
Japanese Yen | 39,860 |  |  | 578 |  |  | 30,688 |  |  | (89 | )
South Korean Won | 22,964 |  |  | 471 |  |  | 15,888 |  |  | (134 | )
British Pound Sterling | 48,318 |  |  | (114 | ) |  | 13,233 |  |  | 80 |
Other currencies | 65,351 |  |  | (363 | ) |  | 53,698 |  |  | (505 | )
Total | $ | 246,999 |  |  | $ | (122 | ) |  | $ | 224,680 |  |  | $ | (406 | )
Latest maturity date | July 2018 |  | January 2018
Schedule of Gains / Losses from Foreign Currency Transactions and Derivative Contracts | Amounts reported in ‘Foreign currency gains, net’ in the condensed consolidated statements of operations include both realized and unrealized gains (losses) from foreign currency transactions and derivative contracts, and were:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
| (in thousands)
Foreign currency transaction gains (losses) | $ | (563 | ) |  | $ | (1,417 | ) |  | $ | 488 |  |  | $ | 1,794 |
Foreign currency forward exchange contracts gains (losses) | 846 |  |  | 1,579 |  |  | 866 |  |  | (1,356 | )
Foreign currency gains, net | $ | 283 |  |  | $ | 162 |  |  | $ | 1,354 |  |  | $ | 438 |

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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5618551-113959 + 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=84234895&loc=SL5624163-113959 + 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=84234895&loc=SL5579245-113959 + Details
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