XML 93 R59.htm IDEA: XBRL DOCUMENT v3.4.0.3
Long-term Debt, Line of Credit and Derivatives - Provisions of the term loan (Details) - USD ($)
1 Months Ended 3 Months Ended
May. 06, 2016
Mar. 31, 2016
Mar. 31, 2015
Debt Instrument [Line Items]      
Periodic payment, principal   $ 1,700,000  
Current portion of debt   9,300,000  
Long-term debt, excluding current maturities   95,600,000  
Repayments of debt   11,688,000 $ 4,017,000
Term Loan | Line of Credit      
Debt Instrument [Line Items]      
Fair value of amount outstanding   104,900,000  
Line of credit facility, maximum borrowing capacity   $ 135,000,000  
Term Loan | Line of Credit | London Interbank Offered Rate (LIBOR)      
Debt Instrument [Line Items]      
Interest rate, effective percentage   3.50%  
Subsequent Event | Term Loan | Line of Credit      
Debt Instrument [Line Items]      
Repayments of debt $ 1,600,000