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CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
CURRENT ASSETS:    
Customer receivables, allowance for doubtful accounts $ 589us-gaap_AllowanceForDoubtfulAccountsReceivable $ 327us-gaap_AllowanceForDoubtfulAccountsReceivable
OTHER ASSETS:    
Deferred financing costs, accumulated amortization $ 5,434us-gaap_AccumulatedAmortizationOfNoncurrentDeferredFinanceCosts $ 5,077us-gaap_AccumulatedAmortizationOfNoncurrentDeferredFinanceCosts
STOCKHOLDERS' EQUITY:    
Preferred Stock, par value (in dollars per share) $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare
Preferred Stock, shares authorized (in shares) 10,000,000us-gaap_PreferredStockSharesAuthorized 10,000,000us-gaap_PreferredStockSharesAuthorized
Common Stock, par value (in dollars per share) $ 0.01us-gaap_CommonStockParOrStatedValuePerShare $ 0.01us-gaap_CommonStockParOrStatedValuePerShare
Common Stock, shares authorized (in shares) 80,000,000us-gaap_CommonStockSharesAuthorized 80,000,000us-gaap_CommonStockSharesAuthorized
Common Stock, shares issued (in shares) 47,929,789us-gaap_CommonStockSharesIssued 47,718,818us-gaap_CommonStockSharesIssued
Common Stock, shares outstanding (in shares) 47,929,789us-gaap_CommonStockSharesOutstanding 47,718,818us-gaap_CommonStockSharesOutstanding