5. INCOME TAXES (Details) - USD ($)	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Jun. 30, 2018	Mar. 31, 2018
INCOME TAXES
Unrecognized tax benefits, current	$ 0			$ 0	$ 0
Unrecognized tax benefits, noncurrent	619,000			619,000	619,000
Deferred tax assets unrecognized tax benefit	2,200,000			2,200,000
Possible reduction in uncertain tax benefits	0			$ 0
Corporate income tax rate		35.00%		21.00%
Deferred Tax Assets, Net	6,600,000			$ 6,600,000	6,000,000
Valuation allowance	$ (6,500,000)			$ (6,500,000)	$ (5,900,000)
Effective annual income tax rate (as a percentage)	(4.80%)		(9.90%)