Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Income Taxes [Line Items]
Increase (decrease) in valuation allowance	$ 8,900,000	$ (5,800,000)
Net operating loss included in deferred tax assets	29,062,000	28,162,000
Net operating loss included in deferred tax assets, before tax effect	61,200,000
Net operating loss included in deferred tax asset, net of valuation allowance	8,800,000
Excess stock deductions	110,000,000
Tax credit carryforward under with and without method	612,000
Undistributed earnings in non-U.S subsidiaries	307,000
Unrecognized deferred tax liability	109,000
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 included in deferred tax assets	21,400,000
Net operating loss carryforwards	81,300,000
Section 382 Of Internal Revenue Code [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	29,500,000
Non-U.S [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	2,200,000
State [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	94,000,000
Research Tax Credit Carryforward [Member] | Federal [Member]
Income Taxes [Line Items]
Tax credit carryforward	21,000,000
Research Tax Credit Carryforward [Member] | State [Member]
Income Taxes [Line Items]
Tax credit carryforward	14,500,000
Tax credit carryforward subject to expiration	2,800,000
Tax credit carryforward not subject to expiration	$ 11,700,000