Income Taxes - Operating Losses and Tax Credits (Details) - USD ($) $ in Thousands	Apr. 02, 2016	Mar. 28, 2015
Income Tax Disclosure [Abstract]
Federal net operating losses	$ 27,430	$ 19,785
Federal net operating losses	3,467	3,467
Foreign operating losses and tax credits	12,173	11,433
Federal research credits	21,336	19,670
State research credits	4,480	4,287
Federal minimum tax credit	990	1,049
Federal capital losses	8,022	8,855
Net operating loss carryforward, net of tax and tax credits	$ 77,898	$ 68,546

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible capital loss carryforwards.

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