Income Taxes - Operating Losses and Tax Credits (Details) (USD $) In Thousands, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013
Income Tax Disclosure [Abstract]
Federal net operating losses	$ 7,691	$ 0
Federal net operating losses	3,100	2,863
Foreign operating losses and tax credits	11,527	9,923
Federal research credits	18,332	17,633
State research credits	3,953	4,439
Federal minimum tax credit	1,106	1,171
Federal capital losses	4,024	4,038
Net operating loss carryforward, net of tax and tax credits	$ 49,733	$ 40,067