v3.19.1

INCOME TAXES (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Federal statutory income tax rate, percentage		21.00%	35.00%
Change in enacted tax rate		$ 634	$ 115,545
Change in valuation allowance		(3,330)	(104,710)	$ 24,522
Benefit to tax rate	$ 1,400	2,700
Deferred tax assets, gross	221,707	218,377	221,707
Deferred tax assets, operating loss carry forwards, federal		240,000
Deferred tax assets, 0perating loss carry forwards, state		296,500
Deferred tax assets, federal research and development credits	1,870	1,870	1,870
Deferred tax assets, net	$ 0	$ 0	$ 0

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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