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ACQUISITIONS AND PRO FORMA RESULTS (Pro Forma Financial Information Summarization Results of Operations) (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Business Combinations [Abstract] |  |  |
Total revenue from continuing operations | $ 940,005 | $ 921,998 | $ 803,073
Net income from continuing operations | $ 10,694 | $ 40,721 | $ 35,796
Net income per share |  |  |
Basic (in dollars per share) | $ 0.31 | $ 1.26 | $ 1.10

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