Quarterly report pursuant to Section 13 or 15(d)

INCOME TAXES INCOME TAXES (Narrative) (Details)

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INCOME TAXES INCOME TAXES (Narrative) (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Income Tax Disclosure [Abstract]      
Income tax provision $ 0 $ 539,000  
Non-recurring income tax receivable booked due to Tax Act     $ 600,000