CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Dec. 31, 2016	Jan. 02, 2016
Sales Revenue, Goods, Net	$ 25,427	$ 31,282	$ 85,069	$ 98,914
Sales Revenue, Services, Net	8,352	12,060	26,036	33,991
Net sales	33,779	43,342	111,105	132,905
Cost of Goods Sold	17,283	20,292	53,851	63,922
Cost of Services	5,048	5,329	14,018	17,464
Cost of sales	22,331	25,621	67,869	81,386
Gross profit	11,448	17,721	43,236	51,519
Operating expenses:
Selling, service and administration	13,280	12,468	38,917	37,619
Research, development and engineering	7,868	7,778	23,258	24,706
Business Combination, Integration Related Costs	31	0	366	194
Restructuring Costs	321	1,944	321	2,597
Net operating expenses	21,500	22,190	62,862	65,116
Operating (loss) income	(10,052)	(4,469)	(19,626)	(13,597)
Non-operating (expense) income:
Interest and other (expense) income, net	34	67	162	68
Other Nonoperating Income (Expense)	34	67	162	68
Income (loss) before income taxes	(10,018)	(4,402)	(19,464)	(13,529)
Provision for (benefit from) income taxes	(325)	184	22	681
Net (loss) income	$ (9,693)	$ (4,586)	$ (19,486)	$ (14,210)
Net (loss) income per share - basic	$ (0.29)	$ (0.15)	$ (0.60)	$ (0.45)
Net (loss) income per share - diluted	$ (0.29)	$ (0.15)	$ (0.60)	$ (0.45)
Weighted average number of shares - basic	32,919	31,495	32,379	31,355
Weighted average number of shares - diluted	32,919	31,495	32,379	31,355