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Other Current Liabilities - Schedule of Other Current Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Other Liabilities Disclosure [Abstract]    
Taxes payable $ 3,777 $ 16,845
Labor liabilities 1,268 1,410
Billings in excess of costs 1,296
Other current liabilities $ 6,341 $ 18,255