CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Income Statement
Net revenues	$ 52,736	$ 53,498	$ 58,579
Cost of revenues	25,999	28,375	32,469
Gross profit	26,737	25,123	26,110
Operating expenses:
Research and development	12,095	11,917	13,110
Selling, general and administrative	17,663	19,247	18,814
Total operating expenses	29,758	31,164	31,924
Loss from operations	(3,021)	(6,041)	(5,814)
Interest income, net	307	324	387
Other income (expense), net	(97)	64	(49)
Loss before income taxes	(2,811)	(5,653)	(5,476)
Provision (benefit) for income taxes	(641)	(675)	713
Net loss	$ (2,170)	$ (4,978)	$ (6,189)
Net loss per share:
Basic	$ (0.10)	$ (0.20)	$ (0.23)
Diluted	$ (0.10)	$ (0.20)	$ (0.23)
Weighted average shares used in per share calculations:
Basic	22,593	25,029	27,505
Diluted	22,593	25,029	27,505