INCOME TAXES (Income Taxes by Jurisdiction) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
U.S. federal:
Current	$ 0	$ 0
Deferred	0	0
Total U.S. federal	0	0
U.S. state and local:
Current	2,000	1,000
Deferred	0	0
Total U.S. state and local	2,000	1,000
Foreign:
Current	0	0
Deferred	(1,000)	(15,000)
Total foreign	1,000	15,000
Income taxes differ from the amounts computed by applying the U.S. federal income tax rate to pretax income (loss) before income taxes
Expected income tax benefit	(5,211,000)	(7,357,000)
State income tax (benefit), net of federal benefit	(1,997,000)	(1,176,000)
Valuation allowance	7,372,000	7,398,000
Permanent differences:
Stock options	285,000	95,000
Warrants	0	914,000
Research & development credit	(405,000)	(263,000)
Adjustment to deferred taxes	(68,000)	267,000
Foreign rate differential	2,000	19,000
Other	23,000	89,000
Provision for (benefit from) income taxes	$ 1,000	$ (14,000)