Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 24, 2017
Income Tax Disclosure [Abstract]
Provision (benefit) for income taxes	$ (228)	$ 4,963
Effective tax rate	5.10%	10.40%
Unrecognized tax benefits	$ 55,800
Unrecognized tax benefits, gross increase due to current year unrecognized tax benefits	700
Balance of accrued interest and penalties, net of tax	$ 1,300