Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Sep. 23, 2017	Jun. 24, 2017	Sep. 24, 2016	Sep. 23, 2017	Sep. 24, 2016
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 17,197		$ 16,634	$ 22,160	$ 20,232
Effective tax rate	19.00%		16.20%	16.00%	16.30%
Unrecognized tax benefits	$ 33,600			$ 33,600
Unrecognized tax benefits, gross decrease due to lapse of the statute of limitations applicable to a prior year tax deduction				2,300
Unrecognized tax benefits, gross increase due to current year unrecognized tax benefits	2,800	$ 2,200
Decrease in unrecognized tax benefits is reasonably possible	1,100			1,100
Balance of accrued interest and penalties, net of tax	$ 500			$ 500