CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Sales Revenue, Goods, Net	$ 60,316	$ 21,442	$ 122,409	$ 59,642
Sales Revenue, Services, Net	10,651	8,216	21,242	17,684
Net sales	70,967	29,658	143,651	77,326
Cost of Goods Sold	38,179	14,146	79,605	36,568
Cost of Services	6,256	4,532	11,094	8,970
Cost of sales	44,435	18,678	90,699	45,538
Gross profit	26,532	10,980	52,952	31,788
Operating expenses:
Selling, service and administration	11,648	12,766	24,456	25,637
Research, development and engineering	8,274	7,760	17,208	15,390
Business Combination, Integration Related Costs	0	335	0	335
Restructuring Costs	2,162	0	3,373	0
Net operating expenses	22,084	20,861	45,037	41,362
Operating (loss) income	4,448	(9,881)	7,915	(9,574)
Non-operating (expense) income:
Interest and other (expense) income, net	(229)	206	(413)	128
Other Nonoperating Income (Expense)	(229)	206	(413)	128
Income (loss) before income taxes	4,219	(9,675)	7,502	(9,446)
Provision for (benefit from) income taxes	(41)	0	340	347
Net (loss) income	$ 4,260	$ (9,675)	$ 7,162	$ (9,793)
Net (loss) income per share - basic	$ 0.13	$ (0.30)	$ 0.21	$ (0.30)
Net (loss) income per share - diluted	$ 0.12	$ (0.30)	$ 0.21	$ (0.30)
Weighted average number of shares - basic	33,861	32,396	33,647	32,109
Weighted average number of shares - diluted	34,874	32,396	34,716	32,109