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Long-term Debt and Line of Credit - Derivative Financial Instruments (Details)
$ in Thousands
Dec. 31, 2015
USD ($)
Sep. 16, 2015
USD ($)
contract
Dec. 31, 2014
USD ($)
Debt Instrument [Line Items]      
Percent of aggregate principal amount hedged   50.00%  
Interest rate swap liability $ 145   $ 0
Swap      
Debt Instrument [Line Items]      
Derivative, notional amount   $ 67,500  
Derivative, number of instruments held (contract) | contract   5