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Debt (Schedule of Long Term Debt) (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Current Maturities: $ 1,372 $ 77
Long-term debt: 134,018 144,006
Total debt 135,390 144,083
Capital lease obligations    
Debt Instrument [Line Items]    
Current Maturities: 0 17
Long-term debt: 1 6
Other notes payable    
Debt Instrument [Line Items]    
Current Maturities: 1,372 60
Long-term debt: 17 0
Bank revolving credit facility    
Debt Instrument [Line Items]    
Long-term debt: $ 134,000 $ 144,000