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NATURE OF OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES - Accounts Payable, Accrued Expenses and Other Liabilities (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Accounting Policies [Abstract]    
Accounts payable and accrued expenses $ 32,777us-gaap_AccountsPayableAndOtherAccruedLiabilities $ 18,739us-gaap_AccountsPayableAndOtherAccruedLiabilities
Other liabilities 16,042us-gaap_OtherLiabilities 18,041us-gaap_OtherLiabilities
Total $ 48,819us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent $ 36,780us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent