CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	9 Months Ended
	Jan. 02, 2016 USD ($)	Dec. 27, 2014 USD ($)
CASH FLOWS FROM OPERATING ACTIVITIES
Net (loss) income	$ (14,210)	$ (20,870)
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation and amortization	5,659	5,880
Amortization of acquired intangible assets	1,047	1,112
Share-based compensation expense	3,939	3,402
Gain on sale of property and equipment, net	(788)	8
Provision for Doubtful Accounts	127	0
Decrease (increase) in deferred income taxes	(71)	2
Changes in operating accounts, net of acquisitions:
Decrease (increase) in trade receivables, net	8,593	(3,284)
Decrease (increase) in inventories	(7,046)	(2,169)
Decrease (increase) in shipped systems pending acceptance	1,342	1,106
Decrease (increase) in other current assets	1,967	783
Increase (decrease) in accounts payable and accrued liabilities	10,531	217
Increase (decrease) in deferred revenue	(4,668)	(2,692)
Net cash (used in) provided by operating activities	7,998	(16,521)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of investments	(320,581)	(357,046)
Proceeds from sales and maturities of investments	306,423	389,900
Purchase of property, plant and equipment	(2,740)	(3,608)
Proceeds from sale of property, plant, and equipment	2	154
Decrease (increase) in other assets	(133)	(980)
Net cash (used in) provided by investing activities	(17,029)	28,420
CASH FLOWS FROM FINANCING ACTIVITIES
Cash dividends paid to shareholders	0	(7,266)
Payments Related to Tax Withholding for Share-based Compensation	(645)	(1,850)
Proceeds from Issuance of Common Stock	1,056	1,407
Payments for Repurchase of Equity	0	(1,456)
Net cash (used in) provided by financing activities	411	(9,165)
Effect of exchange rate changes on cash	(303)	(1,129)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(8,923)	1,605
Cash and Cash Equivalents, at Carrying Value	42,071
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid for interest	57	2
Cash paid for income taxes	(799)	(863)
Income tax refunds received	140	564
Property, Plant and Equipment, Gross, Period Increase (Decrease)	2,988	1,474
Property, Plant and Equipment, Additions	$ 160	$ 945