v3.4.0.3
FAIR VALUE OF FINANCIAL INSTRUMENTS - Carrying Value (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Senior Notes    
Fair Value Of Instruments [Line Items]    
Carrying value of debt $ 218,360 $ 218,269
Fair value of debt 227,094 227,000
Finance Method Lease Obligations    
Fair Value Of Instruments [Line Items]    
Carrying value of debt 0 0
Letter of credit    
Fair Value Of Instruments [Line Items]    
Carrying value of debt 670 670
Revolver, due November 23, 2016 [Member]    
Fair Value Of Instruments [Line Items]    
Carrying value of debt 13,500 26,000
Fair value of debt 13,500 26,000
Term Loan B [Member]    
Fair Value Of Instruments [Line Items]    
Carrying value of debt 236,918 242,750
Fair value of debt 237,214 242,447
Other Debt [Member]    
Fair Value Of Instruments [Line Items]    
Carrying value of debt $ 97 $ 0