Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
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Fair value as of the balance sheet date of all foreign currency derivative assets designated as cash flow hedging instruments.

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-Name Accounting Standards Codification
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Fair value as of the balance sheet date of all foreign currency derivative liabilities designated as cash flow hedging instruments.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Amount before tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount of tax expense (benefit) allocated to other comprehensive income (loss) attributable to parent entity.

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Accumulated Other Comprehensive Income (Loss) (Details) $ in Thousands, € in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)	Nov. 30, 2016 EUR (€)
Components of comprehensive income
Net income	$ 5,278	$ 3,687	$ 9,898	$ 7,753
Mark to market of foreign exchange hedges	391		440
Deferred income tax expense	(143)		(161)
Comprehensive income	5,526	$ 3,687	10,177	$ 7,753
Foreign exchange hedges assets	88		88
Foreign exchange hedges liabilities					$ 352
Other current assets
Components of comprehensive income
Foreign exchange hedges assets	76		76
Other assets, net
Components of comprehensive income
Foreign exchange hedges assets	$ 12		$ 12
Accrued Expenses
Components of comprehensive income
Foreign exchange hedges liabilities					309
Other liabilities
Components of comprehensive income
Foreign exchange hedges liabilities					$ 43
Foreign Exchange Contract \| Designated as Hedging Instrument
Components of comprehensive income
Notional amount \| €						€ 5.5