Amount of gain (loss) from excluded component of derivative hedge, recognized in earnings. Excludes recognition under systematic and rational method.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
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-Section 45
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Nominal or face amount used to calculate payment on derivative.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-SubTopic 10
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Derivative Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Foreign currency loss from foreign currency exchange rate forward contracts		$ (750)	$ (1,438)
Derivative, notional amount			$ 16,300
Foreign Exchange Contract [Member] \| Cash Flow Hedge
Derivative [Line Items]
Gain (Loss) on Foreign Currency Cash Flow Hedge	$ 3,500