13. QUARTERLY FINANCIAL DATA (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Consolidated Statement of Operations Data:
Net revenues	$ 10,392	$ 11,484	$ 13,358	$ 12,946	$ 12,213	$ 12,921	$ 13,577	$ 14,025	$ 48,180	$ 52,736	$ 53,498
Gross profit	5,856	6,495	7,343	6,722	6,139	6,386	6,917	7,295	26,416	26,737	25,123
Net income (loss)	$ (1,349)	$ 348	$ 626	$ 260	$ (87)	$ (819)	$ (347)	$ (917)	$ (115)	$ (2,170)	$ (4,978)
Net loss per common share - Basic	$ (0.07)	$ 0.02	$ 0.03	$ 0.01		$ (0.04)	$ (0.02)	$ (0.04)	$ (0.01)	$ (0.10)	$ (0.20)
Net loss per common share - Diluted	$ (0.07)	$ 0.02	$ 0.03	$ 0.01		$ (0.04)	$ (0.02)	$ (0.04)	$ (0.01)	$ (0.10)	$ (0.20)