Long-Term Debt (Narrative) (Details)			3 Months Ended						12 Months Ended
		Jun. 11, 2020 USD ($) item	Sep. 25, 2021 item	Jun. 26, 2021 item	Mar. 27, 2021 item	Dec. 26, 2020 item	Sep. 26, 2020 item	Jun. 27, 2020 item	Mar. 28, 2020 USD ($) item entity	Feb. 29, 2020 USD ($)	Mar. 30, 2019 USD ($)
Debt Instrument [Line Items]
Amount outstanding under Credit Facility	[1]								$ 566,400,000		$ 137,682,000
Carrying amount of long-term debt (including current portion)									566,400,000		137,700,000
Fair value of long-term debt (including current portion)									$ 566,400,000		$ 137,700,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility term									5 years
Revolving credit facility agreement									$ 600,000,000
Revolving credit facility agreement, number of participating banks | entity									8
Credit Facility Increased Availability									$ 250,000,000
Amount outstanding under Credit Facility									566,400,000
Net availability under the credit facility									$ 0	$ 350,000,000
Interest coverage ratio | item									1.55
Revolving Credit Facility [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Interest rate at period end over LIBOR									1.00%		1.25%
First Amendment To Credit Facility [Member]
Debt Instrument [Line Items]
Allowable acquisitions		$ 100,000,000
Allowable dividend or distribution		38,500,000
Standby Letters of Credit [Member]
Debt Instrument [Line Items]
Revolving credit facility agreement									$ 80,000,000
Amount outstanding under Credit Facility									$ 33,600,000
Minimum [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Percentage of fees on amount available									0.125%
Minimum [Member] | Revolving Credit Facility [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Interest rate over LIBOR on the facility									0.75%
Minimum [Member] | Standby Letters of Credit [Member]
Debt Instrument [Line Items]
Percentage of fees on amount available									0.875%
Maximum [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Percentage of fees on amount available									0.35%
Maximum [Member] | Revolving Credit Facility [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Interest rate over LIBOR on the facility									2.00%
Maximum [Member] | Standby Letters of Credit [Member]
Debt Instrument [Line Items]
Percentage of fees on amount available									2.125%
Forecast [Member] | First Amendment To Credit Facility [Member]
Debt Instrument [Line Items]
Debt to EBITDAR ratio | item			4.75	5.00	5.50	6.25	6.00	5.50
Subsequent Event [Member] | First Amendment To Credit Facility [Member]
Debt Instrument [Line Items]
Required liquidity		$ 275,000,000
Minimum ratio of indebtedness to EBITDAR triggering covenant relief period | item		5.00
Subsequent Event [Member] | Minimum [Member] | First Amendment To Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate		0.75%
Subsequent Event [Member] | Minimum [Member] | First Amendment To Credit Facility [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Interest rate spread during debt covenant relief period		2.25%

[1] The London Interbank Offered Rate (“LIBOR”) at March 28, 2020 was .99%.