Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Revenues	$ 13,345	$ 23,723
Cost of revenues	12,482	20,503
Gross profit	863	3,220
Operating expenses:
Research and development	2,952	3,162
Selling, general and administrative	7,216	7,535
Impairment of minority interest investment	0	741
Amortization of acquisition related intangibles	39	39
Total operating expenses	10,207	11,477
Operating loss	(9,344)	(8,257)
Change in fair value of derivatives and warrants	(678)	800
Interest expense, net	(135)	(318)
Other income (expense), net	126	(772)
Loss before income tax expense	(10,031)	(8,547)
Income tax expense	324	574
Net loss	$ (10,355)	$ (9,121)
Net loss per common share
Basic (in dollars per share)	$ (0.76)	$ (0.75)
Diluted (in dollars per share)	$ (0.76)	$ (0.75)
Weighted average number of common shares outstanding
Basic (in shares)	13,676	12,111
Diluted (in shares)	13,676	12,111