Income Taxes - Rate reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 04, 2023	Feb. 26, 2022	Feb. 27, 2021
Reconciliation of the expected statutory federal tax and the total income tax expense (benefit)
Federal statutory rate	$ (152,388)	$ (110,492)	$ (25,103)
Nondeductible expenses	556	398	588
State income taxes, net	271,306	(45,388)	10,042
Bargain purchase gain		1,123	(10,018)
Decrease of previously recorded liabilities	(18,689)	(3,798)	(2,273)
Nondeductible compensation	2,045	1,551	3,764
Qualified fringe disallowance	342	224	313
Nondeductible excise tax			1,296
Stock based compensation	2,213	198	2,806
Valuation allowance	(112,037)	152,785	(2,222)
Other	185	(381)	650
Total income tax (benefit) expense	(6,467)	$ (3,780)	$ (20,157)
Income tax benefit offset amount	$ 256,411
Overall tax rate impact percent			8.40%

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of current and deferred federal, state, and local tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, current and deferred national, regional, territorial, and provincial tax expense (benefit) for non-US (United States of America) jurisdiction.

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