SUMMARIZED QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) - USD ($)	3 Months Ended										12 Months Ended
	Dec. 31, 2016		Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015		Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Summarized Quarterly Financial Data Details
Revenue	$ 3,049,000		$ 2,223,000	$ 2,462,000	$ 2,078,000	$ 2,832,000		$ 2,536,000	$ 2,104,000	$ 2,624,000	$ 9,812,000	$ 10,096,000	$ 15,852,000
Net income (loss)	$ (3,209,000)	[1]	$ (114,000)	$ (728,000)	$ (501,000)	$ (200,000)	[2]	$ (728,000)	$ (407,000)	$ (1,534,000)	$ (5,578,000)	$ (2,869,000)	$ (6,557,000)
Earnings (loss) per share:
Basic	$ (.15)		$ (.05)	$ (.03)	$ (.02)	$ 0.00		$ (0.04)	$ (0.02)	$ (0.07)
Diluted						$ (0.01)		$ 0.01

[1] Includes $825,000 loss ($0.04 per share) related to the arbitration settlement and $2,206,000 ($0.10 per share) of expenses related to the change in ownership.

[2] Includes $448,000 loss ($0.02 per share) related to disposal of investment in former affiliate.