CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement
Net revenues	$ 9,647	$ 13,358	$ 20,334	$ 26,304
Cost of revenues	4,789	6,015	9,872	12,239
Gross profit	4,858	7,343	10,462	14,065
Operating expenses:
Research and development	4,160	4,282	8,495	7,781
Selling, general and administrative	2,492	2,681	5,290	5,515
Total operating expenses	6,652	6,963	13,785	13,296
Income (loss) from operations	(1,794)	380	(3,323)	769
Interest income, net	99	69	196	146
Other income, net	4	23	5	88
Income (loss) before income taxes	(1,691)	472	(3,122)	1,003
Provision for (benefit from) income taxes	49	(154)	130	117
Net income (loss)	$ (1,740)	$ 626	$ (3,252)	$ 886
Net income (loss) per share:
Basic	$ (0.08)	$ 0.03	$ (0.16)	$ 0.04
Diluted	$ (0.08)	$ 0.03	$ (0.16)	$ 0.04
Weighted average shares used in per share calculations:
Basic	21,037	20,529	20,922	20,912
Diluted	21,037	21,104	20,922	21,349