13. QUARTERLY FINANCIAL DATA (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Consolidated Statement of Operations Data:
Net revenues	$ 12,213	$ 12,921	$ 13,577	$ 14,025	$ 13,063	$ 14,227	$ 13,263	$ 12,945	$ 52,736	$ 53,498	$ 58,579
Gross profit	6,139	6,386	6,917	7,295	6,473	6,650	6,061	5,939	26,737	25,123	26,110
Net income (loss)	$ (87)	$ (819)	$ (347)	$ (917)	$ (2,730)	$ 148	$ (950)	$ (1,446)	$ (2,170)	$ (4,978)	$ (6,189)
Net income (loss) per common share - Basic		$ (0.04)	$ (0.02)	$ (0.04)	$ (0.12)	$ 0.01	$ (0.04)	$ (0.05)	$ (0.10)	$ (0.20)	$ (0.23)
Net income (loss) per common share - Diluted		$ (0.04)	$ (0.02)	$ (0.04)	$ (0.12)	$ 0.01	$ (0.04)	$ (0.05)	$ (0.10)	$ (0.20)	$ (0.23)