Quarterly report pursuant to Section 13 or 15(d)

Fair Value - Assets and Liabilities on a Recurring Basis (Details)

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Fair Value - Assets and Liabilities on a Recurring Basis (Details) - Recurring - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Assets:    
Other long-term assets $ 4,634 $ 3,458
Total Assets 4,634 3,458
Liabilities:    
Long term debt 312,297 315,940
Interest rate swaps 2,781 1,985
Total Liabilities 319,331 328,934
Henderson    
Liabilities:    
Earnout 553 636
Dejana    
Liabilities:    
Earnout $ 3,700 $ 10,373