Income Taxes (Significant Components of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 25, 2017
Deferred tax assets:
Accrued expenses and allowances	$ 5,793	$ 9,002
Net operating loss carryforwards	3,646	6,294
Research and development tax credit carryforwards	12,701	13,977
Stock based compensation	14,156	17,356
Other	2,402	9,141
Total deferred tax assets	38,698	55,770
Valuation allowance for deferred tax assets	(14,671)	(12,570)
Net deferred tax assets	24,027	43,200
Deferred tax liabilities:
Depreciation and amortization	9,184	13,837
Acquisition intangibles	13,427	16,301
Total deferred tax liabilities	22,611	30,138
Total net deferred tax assets	$ 1,416	$ 13,062