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EQUITY METHOD INVESTMENT - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]    
Investment balance $ 9,000  
Pre-tax loss from equity method investment 6,388 $ 0
Income tax benefit 10,000  
After-tax income from equity method investment $ 4,000