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Prepaid Expenses and Other Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Sep. 24, 2016
Prepaid Expense and Other Asset [Line Items]    
Prepaid expenses $ 7,668 $ 8,678
Unbilled accounts receivable 9,658 10,446
Total prepaid expenses and other assets $ 17,326 $ 19,124