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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)