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INCOME TAXES (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Mar. 31, 2017
INCOME TAXES      
Benefit for income taxes $ (6,196)   $ (6,000)
Effective tax rate 21.50%   25.30%
Federal statutory rate     35.00%
Provisional amount of tax expenses related to re-measurement of deferred tax assets and liabilities   $ 35,000