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Long-Term Debt (Long-term Debt Table) (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Deferred Finance Costs, Net $ (1,498) $ (1,445)
Current maturities on long-term debt (12,305) (12,012)
Long-term debt, excluding current maturities 192,046 195,009
Credit Agreement [Member] | Revolving Credit Facility [Member]    
Debt Instrument [Line Items]    
Carrying value of the liability component   92,600
Credit Agreement [Member] | Term Loan [Member]    
Debt Instrument [Line Items]    
Carrying value of the liability component 147,187 110,937
Notes Payable, Other Payables [Member] | Acquisition Debt, Deferred Purchase Price [Member]    
Debt Instrument [Line Items]    
Carrying value of the liability component $ 4,662 $ 4,929