CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 02, 2016	Dec. 27, 2014	Jan. 02, 2016	Dec. 27, 2014
Sales Revenue, Goods, Net	$ 31,282	$ 31,750	$ 98,914	$ 85,447
Sales Revenue, Services, Net	12,060	11,911	33,991	36,100
Net sales	43,342	43,661	132,905	121,547
Cost of Goods Sold	20,292	22,031	63,922	59,707
Cost of Services	5,329	6,917	17,464	20,074
Cost of sales	25,621	28,948	81,386	79,781
Gross profit	17,721	14,713	51,519	41,766
Operating expenses:
Selling, service and administration	12,468	12,332	37,619	36,384
Research, development and engineering	7,778	8,384	24,706	25,953
Business Combination, Integration Related Costs	0	0	194	0
Restructuring Costs	1,944	0	2,597	0
Net operating expenses	22,190	20,716	65,116	62,337
Operating (loss) income	(4,469)	(6,003)	(13,597)	(20,571)
Non-operating (expense) income:
Interest and other (expense) income, net	67	64	68	(134)
Other Nonoperating Income (Expense)	67	64	68	(134)
Income (loss) before income taxes	(4,402)	(5,939)	(13,529)	(20,705)
Provision for (benefit from) income taxes	184	437	681	165
Net (loss) income	$ (4,586)	$ (6,376)	$ (14,210)	$ (20,870)
Net (loss) income per share - basic	$ (0.15)	$ (0.21)	$ (0.45)	$ (0.68)
Net (loss) income per share - diluted	$ (0.15)	$ (0.21)	$ (0.45)	$ (0.68)
Weighted average number of shares - basic	31,495	30,617	31,355	30,507
Weighted average number of shares - diluted	31,495	30,617	31,355	30,507
Cash dividends paid per common share	$ 0.00	$ 0.08	$ 0.00	$ 0.24