CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 01, 2016	Sep. 26, 2015	Oct. 01, 2016	Sep. 26, 2015
Sales Revenue, Goods, Net	$ 21,442	$ 35,570	$ 59,642	$ 67,632
Sales Revenue, Services, Net	8,216	10,902	17,684	21,931
Net sales	29,658	46,472	77,326	89,563
Cost of Goods Sold	14,146	22,345	36,568	43,630
Cost of Services	4,532	5,706	8,970	12,135
Cost of sales	18,678	28,051	45,538	55,765
Gross profit	10,980	18,421	31,788	33,798
Operating expenses:
Selling, service and administration	12,766	12,534	25,637	25,151
Research, development and engineering	7,760	8,283	15,390	16,928
Business Combination, Integration Related Costs	335	40	335	194
Restructuring Costs	0	591	0	653
Net operating expenses	20,861	21,448	41,362	42,926
Operating (loss) income	(9,881)	(3,027)	(9,574)	(9,128)
Non-operating (expense) income:
Interest and other (expense) income, net	206	6	128	1
Other Nonoperating Income (Expense)	206	6	128	1
Income (loss) before income taxes	(9,675)	(3,021)	(9,446)	(9,127)
Provision for (benefit from) income taxes	0	239	347	497
Net (loss) income	$ (9,675)	$ (3,260)	$ (9,793)	$ (9,624)
Net (loss) income per share - basic	$ (0.30)	$ (0.10)	$ (0.30)	$ (0.31)
Net (loss) income per share - diluted	$ (0.30)	$ (0.10)	$ (0.30)	$ (0.31)
Weighted average number of shares - basic	32,396	31,384	32,109	31,280
Weighted average number of shares - diluted	32,396	31,384	32,109	31,280