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Fair Value Measurements (Details) (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
Sep. 30, 2014
Impaired long-lived assets
Sep. 30, 2013
Long-term receivable from the sale of Canadian Operations
Sep. 30, 2014
Significant Other Observable Inputs (Level 2)
Recurring basis
Dec. 31, 2013
Significant Other Observable Inputs (Level 2)
Recurring basis
Sep. 30, 2014
Significant Unobservable Inputs (Level 3)
Nonrecurring basis
Sep. 30, 2013
Significant Unobservable Inputs (Level 3)
Nonrecurring basis
Summarizes the valuation of interest rate swaps and impaired assets            
Interest rate swaps asset     $ 2,925 $ 322    
Interest rate swaps liability     (5,225) (3,374)    
Impaired long-lived assets         2,472 5,508
Inventory write-down - Restructuring         2,331  
Long-term receivable from the sale of our Canadian Operations           $ 7,556
Weighted average disposal period of impaired assets 4 years          
Discount rate (as a percent) 9.00% 13.00%        
Settlement period   5 years 6 months