K - SUMMARIZED QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
K - Summarized Quarterly Financial Data Details
Revenue	$ 4,975,000	$ 3,454,000	$ 3,705,000	$ 3,718,000	$ 4,191,000	$ 3,666,000	$ 4,278,000	$ 4,266,000	$ 15,815,000	$ 16,401,000	$ 20,983,000
Net income	$ 948,000	$ (1,456,000)	$ (6,077,000)	$ 28,000	$ (1,546,000)	$ (1,644,000)	$ (1,353,000)	$ (1,369,000)	$ (6,557,000)	$ (5,912,000)	$ (171,000)
Earnings (loss) per share:
Basic	$ 0.04	$ (0.07)	$ (0.28)	$ 0	$ (0.07)	$ (0.07)	$ (0.06)	$ (0.06)
Diluted	$ 0.04	$ (0.07)	$ (0.28)	$ 0	$ (0.07)	$ (0.07)	$ (0.06)	$ (0.06)