Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	Dec. 26, 2020	Mar. 28, 2020
Rent deferrals	$ 1,600
Timing of lease related expenses	1,100
Finance lease and financing obligation assets, net	279,304	$ 196,575
Operating lease assets, net	$ 207,508	$ 199,729
Re-negotiated Rental Payments [Member]
Percent of leases re-negotiated	23.00%
Finance lease and financing obligation assets, net	$ 67,500
Finance lease liability	63,800
Operating lease assets, net	16,400
Operating lease obligations	$ 20,100