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Debt (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Total current portion of long-term debt $ 7,368 $ 7,366
Total long-term debt 110,865 70,554
Total Senior Credit Facilities 118,233 77,920
Term Loans    
Debt Instrument [Line Items]    
Current portion of long-term debt, Gross 7,500 7,500
Long-term debt, Gross 61,875 63,750
Term Loan And Revolving Credit Facility    
Debt Instrument [Line Items]    
Less: unamortized debt issuance costs (132) (134)
Less: unamortized debt issuance costs (3,010) (3,196)
Revolving Credit Facility    
Debt Instrument [Line Items]    
Long-term debt, Gross $ 52,000 $ 10,000