CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Mar. 02, 2024	Feb. 25, 2023	Feb. 26, 2022
Operating Activities
Net earnings	$ 99,613,000	$ 104,107,000	$ 3,486,000
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	41,588,000	42,403,000	49,993,000
Share-based compensation	9,721,000	8,656,000	6,293,000
Deferred income taxes	(9,748,000)	(7,185,000)	(7,956,000)
Asset impairment charges	6,195,000	0	21,497,000
Loss (gain) on disposal of property, plant and equipment	826,000	(3,815,000)	(20,987,000)
Impairment expense on goodwill and intangible assets	0	0	49,473,000
Proceeds from New Markets Tax Credit transaction, net of deferred costs	0	18,390,000	0
Settlement of New Markets Tax Credit transaction	(4,687,000)	(19,523,000)	0
Non-cash lease expense	11,721,000	11,878,000	12,418,000
Other, net	4,615,000	5,399,000	(1,272,000)
Changes in operating assets and liabilities:
Receivables	23,993,000	(62,304,000)	7,521,000
Inventories	9,366,000	1,731,000	(7,706,000)
Contract assets	9,880,000	(3,380,000)	(897,000)
Accounts payable	(2,655,000)	(5,491,000)	14,738,000
Accrued compensation and benefits	2,102,000	(1,810,000)	912,000
Contract liabilities	6,590,000	20,952,000	(14,288,000)
Operating lease liability	(12,632,000)	(12,149,000)	(12,720,000)
Refundable and accrued income taxes	6,523,000	(6,976,000)	11,017,000
Other current assets and liabilities	1,143,000	11,813,000	(11,051,000)
Net cash provided by operating activities	204,154,000	102,696,000	100,471,000
Investing Activities
Capital expenditures	(43,180,000)	(45,177,000)	(21,841,000)
Proceeds from sales of property, plant and equipment	293,000	7,755,000	30,599,000
Purchases of marketable securities	(2,953,000)	0	(1,038,000)
Sales/maturities of marketable securities	2,165,000	9,712,000	1,563,000
Net cash (used) provided by investing activities	(43,675,000)	(27,710,000)	9,283,000
Financing Activities
Proceeds from revolving credit facilities	196,964,000	485,879,000	0
Repayment on debt	0	(151,000,000)	(2,000,000)
Repayments on revolving credit facilities	(304,817,000)	(327,865,000)	0
Proceeds from exercise of stock options	0	0	4,115,000
Repurchase of common stock	(11,821,000)	(74,312,000)	(100,414,000)
Dividends paid	(21,133,000)	(19,670,000)	(20,266,000)
Other, net	(3,800,000)	(4,055,000)	(2,007,000)
Net cash used by financing activities	(144,607,000)	(91,023,000)	(120,572,000)
Effect of exchange rates on cash	(129,000)	(73,000)	1,124,000
Increase (decrease) in cash, cash equivalents and restricted cash	15,743,000	(16,110,000)	(9,694,000)
Cash, cash equivalents and restricted cash at beginning of year	21,473,000	37,583,000	47,277,000
Cash and cash equivalents at end of year	37,216,000	21,473,000	37,583,000
Non-cash Activity
Capital expenditures in accounts payable	$ 3,588,000	$ 2,909,000	$ 2,326,000