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Debt (Details) - USD ($)
$ in Thousands
Jul. 01, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Total current portion of long-term debt $ 7,371 $ 7,385
Total long-term debt 79,164 88,426
Total Senior Credit Facilities 86,535 95,811
Term Loans    
Debt Instrument [Line Items]    
Current portion of long-term debt, Gross 7,500 7,500
Long-term debt, Gross 67,500 20,000
Term Loan And Revolving Credit Facility    
Debt Instrument [Line Items]    
Less: unamortized debt issuance costs (129) (115)
Less: unamortized debt issuance costs (3,336) (1,574)
Revolving Credit Facility    
Debt Instrument [Line Items]    
Long-term debt, Gross $ 15,000 $ 70,000