INCOME TAXES (Deferred Tax Assets and Liabilities) (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
U.S. federal and state deferred tax liabilities—long term:
Net deferred tax assets (liabilities)	$ 0	$ (1,000)
U.S. Federal and State
U.S. federal and state deferred tax assets—long term:
Accrued payroll	102,000	376,000
Accrued expenses	45,000	21,000
Fixed assets	0	111,000
Intangibles	418,000	457,000
Research & development credit	2,239,000	1,464,000
Net operating loss	20,140,000	13,204,000
Stock compensation	612,000	539,000
New jobs credit	8,000	8,000
Total long-term assets	23,564,000	16,180,000
Total deferred tax assets	23,564,000	16,180,000
U.S. federal and state deferred tax liabilities—long term:
Fixed assets	(16,000)	0
Net deferred tax assets - long term	23,548,000	16,180,000
Less: Valuation allowance	(23,548,000)	(16,180,000)
Net deferred tax assets	0	0
Net operating loss	20,140,000	13,204,000
Foreign
U.S. federal and state deferred tax assets—long term:
Net operating loss	9,000	12,000
U.S. federal and state deferred tax liabilities—long term:
Less: Valuation allowance	(5,000)	0
Net deferred tax assets	5,000
Net operating loss	9,000	12,000
Intangibles	$ (4,000)	(13,000)
Net deferred tax assets (liabilities)		$ (1,000)