Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Income Statement [Abstract]
Revenue	$ 33,549	$ 27,922
Cost of revenue	17,470	16,016
Gross profit	16,079	11,906
Operating expenses
Research and development expenses	4,822	3,930
Selling, general and administrative expenses	9,491	10,312
Total operating expenses	14,313	14,242
Income/(Loss) from operations	1,766	(2,336)
Interest income	6	6
Interest expense	(124)	(121)
Other income(expenses), net	179	(43)
Income /(Loss) before provision for income taxes	1,827	(2,494)
Provision/(Benefit) for income taxes	792	(844)
Net Income/(Loss)	$ 1,035	$ (1,650)
Earnings/(Loss) per share:
Basic (in dollars per share)	$ 0.03	$ (0.05)
Diluted (in dollars per share)	$ 0.03	$ (0.05)
Weighted average number of common shares outstanding
Basic (in shares)	36,600,811	36,509,773
Diluted (in shares)	38,789,725	36,509,773