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Other Current Assets and Other Long Term Assets - Schedule of Other Current Assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
Unbilled receivables on uncompleted contracts $ 10,953 $ 9,868
Prepaid Expenses 971 3,152
Prepaid Taxes 11,594 6,069
Advances and other receivables 1,918 1,725
Other current assets $ 25,436 $ 20,814