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BUSINESS ACQUISITIONS - Pro Forma Information (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Business Acquisition [Line Items]  
Total revenue $ 225,509us-gaap_BusinessAcquisitionsProFormaRevenue
Net income $ 5,572us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
Basic (in dollars per share) $ 0.17us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic