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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Statement of Financial Position [Abstract]    
Accounts receivable, allowance for doubtful accounts $ 6,921us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 7,734us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent