CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Income Statement
Net revenues	$ 48,180	$ 52,736	$ 53,498
Cost of revenues	21,764	25,999	28,375
Gross profit	26,416	26,737	25,123
Operating expenses:
Research and development	15,803	12,095	11,917
Selling, general and administrative	11,140	17,663	19,247
Total operating expenses	26,943	29,758	31,164
Loss from operations	(527)	(3,021)	(6,041)
Interest income, net	312	307	324
Other income (expense), net	166	(97)	64
Loss before income taxes	(49)	(2,811)	(5,653)
Provision (benefit) for income taxes	66	(641)	(675)
Net loss	$ (115)	$ (2,170)	$ (4,978)
Net loss per share:
Basic	$ (0.01)	$ (0.10)	$ (0.20)
Diluted	$ (0.01)	$ (0.10)	$ (0.20)
Weighted average shares used in per share calculations:
Basic	20,652	22,593	25,029
Diluted	20,652	22,593	25,029