Quarterly report pursuant to Section 13 or 15(d)

INCOME TAXES (Details)

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INCOME TAXES (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Tax Credit Carryforward [Line Items]      
Federal corporate tax rate 21.00% 35.00% 35.00%
Income tax receivable $ 4,400    
Research and Development [Member]      
Tax Credit Carryforward [Line Items]      
Refund claims amount $ 350