Facility Exit and Impairment Charges - accrued facility exit charges roll forward (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 04, 2023	Feb. 26, 2022	Feb. 27, 2021
Lease termination and impairment charges
Facility exit charges	$ 43,562	$ 13,296	$ 11,427
Facility Exit Charges
Closed store liability
Balance-beginning of period	1,892	2,754	2,253
Provision for facility exit charges	461	162	793
Cash payments	(125)	(1,024)	(292)
Balance-end of period	$ 2,228	$ 1,892	$ 2,754