Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
	Mar. 28, 2015	Mar. 29, 2014
Income Taxes [Line Items]
Increase (decrease) in valuation allowance	$ 1,000,000
Net operating loss included in deferred tax assets	57,878,000	29,062,000
Unrecognized tax benefit	0	0
Accrued interest and penalties	0
Interest and penalties incurred during period	0	0
Federal [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	26,200,000
Section 382 Of Internal Revenue Code [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	26,200,000
Non-U.S [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	147,600,000
State [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	88,300,000
Research Tax Credit Carryforward [Member] | Federal [Member]
Income Taxes [Line Items]
Tax credit carryforward	5,100,000
Research Tax Credit Carryforward [Member] | State [Member]
Income Taxes [Line Items]
Tax credit carryforward	14,600,000
Tax credit carryforward subject to expiration	2,900,000
Tax credit carryforward not subject to expiration	$ 11,700,000