Unaudited Condensed 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 [Abstract]
Revenues	$ 11,049	$ 18,507	$ 19,971	$ 31,852
Cost of revenues	10,777	16,404	24,186	28,886
Gross margin	272	2,103	(4,215)	2,966
Operating expenses:
Research and development	2,951	2,867	5,667	5,819
Selling, general and administrative	5,339	6,347	11,477	13,563
Amortization of acquisition-related intangibles	0	39	13	78
Change in fair value of contingent consideration	(201)	0	(201)	0
Restructuring	(12)	0	1,328	0
Total operating expenses	8,077	9,253	18,284	19,460
Operating loss	(7,805)	(7,150)	(22,499)	(16,494)
Change in fair value of warrants	144	1,244	1,069	567
Gain on sale of minority interest	951	0	951	0
Interest income (expense), net	54	(107)	45	(243)
Other expense, net	(796)	(518)	(2,170)	(393)
Loss before income tax (benefit) expense	(7,452)	(6,531)	(22,604)	(16,563)
Income tax (benefit) expense	(171)	794	(71)	1,117
Net loss	$ (7,281)	$ (7,325)	$ (22,533)	$ (17,680)
Net loss per common share
Basic (in dollars per share)	$ (0.38)	$ (0.53)	$ (1.26)	$ (1.29)
Diluted (in dollars per share)	$ (0.38)	$ (0.53)	$ (1.26)	$ (1.29)
Weighted average number of common shares outstanding
Basic (in shares)	19,060	13,769	17,925	13,723
Diluted (in shares)	19,060	13,769	17,925	13,723