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Composition of Certain Financial Statement Captions - Schedule of Compensation and Other Employee Benefits (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Compensation and Other Employee Benefits    
Accrued salaries and wages $ 25,111 $ 13,820
Accrued bonus 3,695 4,302
Accrued employee benefits 17,354 18,661
Total $ 46,160 $ 36,783