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UNAUDITED PRO FORMA FINANCIAL INFORMATION (Unaudited Pro Forma Basis) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Business Acquisition, Pro Forma Information [Abstract]    
Revenues $ 144,674 $ 134,612
Depreciation and amortization 56,604 53,879
Net (loss) income $ (25,298) $ 7,764