SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($) financial_institution	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) financial_institution	Sep. 30, 2018 USD ($)	Jan. 01, 2019 USD ($)	Dec. 31, 2018 USD ($)
Concentration Risks, Types, No Concentration Percentage
Number of financial institutions where the Company holds checking deposits | financial_institution	1		1
Restricted Cash
Restricted cash	$ 211,000	$ 211,000	$ 211,000	$ 211,000		$ 211,000
Allowance for doubtful accounts	0		0			0
Income Taxes
Income tax penalties and interest accrued	0		0			$ 0
Income tax penalties and interest expense	0	$ 0	0	$ 0
Recent Accounting Pronouncements
Operating lease right-of-use assets	2,642,000		2,642,000
Total operating lease liabilities	$ 2,817,000		$ 2,817,000
Minimum
Property and Equipment
Useful life (in years)			3 years
Maximum
Property and Equipment
Useful life (in years)			5 years
Accounting Standards Update 2016-02
Recent Accounting Pronouncements
Operating lease right-of-use assets					$ 3,000,000
Total operating lease liabilities					$ 3,000,000