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Derivative Financial Instruments | 12 Months Ended
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Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Derivative Financial Instruments | Derivative Financial Instruments As part of our currency exchange rate risk management strategy, we enter into certain derivative foreign currency forward contracts that do not meet the U.S. GAAP criteria for hedge accounting, but which have the impact of partially offsetting certain foreign currency exposures. We account for these forward contracts at fair value and report the related gains or losses in currency exchange losses (gains) in the consolidated statement of income. At December 31, 2017, the notional amount of open forward contracts was $124.7 million and the unrealized gain on these contracts was $0.5 million. All open forward contracts will mature during the first quarter of 2018. The following table presents the balance sheet location and fair value of assets and liabilities associated with derivative financial instruments.
| December 31,
(In thousands) | 2017 |  | 2016
Derivatives not designated as hedging instruments: |  |  |
Foreign exchange contracts: other current liabilities | $ | 314 |  |  | $ | 258 |
Foreign exchange contracts: other current assets | 840 |  |  | 566 |
The following table presents the income statement location and impact of derivative financial instruments:
(In thousands) | Income Statement Location | (Gain) Loss Recognized in Income
Year ended December 31,
2017 |  | 2016
Derivatives not designated as hedging instruments: |  |  |  |
Foreign exchange contracts | Currency exchange (gains) losses, net | $ | (5,124 | ) |  | $ | 6,675 |

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- Definition The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -URI http://asc.fasb.org/topic&trid=2229140 + Details
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