Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Consolidated Statements of Operations
Total revenues	$ 95,982	$ 77,748	$ 72,251
Cost of revenues	58,580	47,079	44,069
Gross profit	37,402	30,669	28,182
Operating expenses:
Selling, general and administrative	33,313	26,846	24,425
Research and development	6,877	6,933	5,396
Amortization of intangible assets	281	360	431
Change in fair value of contingent consideration			9
Loss on impairment of goodwill	2,168
Total operating expenses	42,639	34,139	30,261
Operating loss	(5,237)	(3,470)	(2,079)
Non-operating income (expense):
Other (expense) income, net	(7)	2	(20)
Interest income, net	13	12	6
Loss from continuing operations before income taxes	(5,231)	(3,456)	(2,093)
Benefit (provision) for income taxes	44	(9,079)	816
Loss from continuing operations	(5,187)	(12,535)	(1,277)
Gain on sale of discontinued operation, net of tax	361	214	207
Net loss	$ (4,826)	$ (12,321)	$ (1,070)
Loss per share from continuing operations - basic and diluted (in dollars per share)	$ (0.16)	$ (0.39)	$ (0.04)
Gain per share from sale of discontinued operation - basic and diluted (in dollars per share)	0.01	0.01	0.01
Net loss per share - basic and diluted (in dollars per share)	$ (0.15)	$ (0.38)	$ (0.03)
Shares used in basic per share calculations (in shares)	32,174	32,049	32,595
Shares used in diluted per share calculations (in shares)	32,174	32,049	32,595