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Hedging Activity and Fair Value Measurements - Schedule of Gains (Losses) on Derivative Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
General and Administrative Expense [Member]
Amount of gain or (loss) reclassified from accumulated OCI (loss) into income	$ (28)		$ (28)
Non-Delivery Forward and Collar Contracts [Member]
Amount of gain or (loss) recognized in OCI (loss) on derivatives	$ (1,390)		$ (1,390)

X

- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
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- Definition

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

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-Publisher FASB
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