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Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Derivative Instruments Liabilities [Member] - Recurring [Member]
$ in Thousands
Sep. 30, 2017
USD ($)
Liabilities [Abstract]  
Total Liabilities $ 16
Level 3 [Member]  
Liabilities [Abstract]  
Total Liabilities $ 16