Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Feb. 25, 2023	Feb. 26, 2022	Feb. 27, 2021
Operating Activities
Net earnings	$ 104,107	$ 3,486	$ 15,436
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	42,403	49,993	51,440
Share-based compensation	8,656	6,293	8,573
Deferred income taxes	(7,185)	(7,956)	(6,460)
Asset impairment	0	21,497	1,400
Gain on disposal of assets	(3,815)	(20,987)	(20,044)
Impairment expense on goodwill and intangible assets	0	49,473	70,069
Proceeds from New Markets Tax Credit transaction, net of deferred costs	18,390	0	0
Settlement of New Markets Tax Credit transaction	(19,523)	0	0
Noncash lease expense	11,878	12,418	12,235
Other, net	5,399	(1,272)	(2,088)
Changes in operating assets and liabilities:
Receivables	(58,839)	7,521	21,630
Inventories	1,731	(7,706)	(1,440)
Costs and earnings on contracts in excess of billings	(3,212)	(897)	44,183
Accounts payable and accrued expenses	10,206	3,348	(32,591)
Billings in excess of costs and earnings on uncompleted contracts	17,467	(14,288)	(10,351)
Refundable and accrued income taxes	(6,976)	11,017	2,652
Operating lease liability	(12,149)	(12,720)	(11,513)
Other, net	(5,842)	1,251	(1,268)
Net cash provided by operating activities	102,696	100,471	141,863
Investing Activities
Capital expenditures	(45,177)	(21,841)	(26,165)
Proceeds from sales of property, plant and equipment	7,755	30,599	25,108
Purchases of marketable securities	0	(1,038)	(3,747)
Sales/maturities of marketable securities	9,712	1,563	2,657
Net cash (used) provided by investing activities	(27,710)	9,283	(2,147)
Financing Activities
Borrowings on line of credit	485,879	0	198,601
Repayment on debt	(151,000)	(2,000)	(5,400)
Payments on line of credit	(327,865)	0	(246,340)
Proceeds from exercise of stock options	0	4,115	1,456
Repurchase and retirement of common stock	(74,312)	(100,414)	(32,878)
Dividends paid	(19,670)	(20,266)	(19,601)
Other, net	(4,055)	(2,007)	(3,714)
Net cash used by financing activities	(91,023)	(120,572)	(107,876)
(Decrease) increase in cash, cash equivalents and restricted cash	(16,037)	(10,818)	31,840
Effect of exchange rates on cash	(73)	1,124	485
Cash, cash equivalents and restricted cash at beginning of year	37,583	47,277	14,952
Cash, cash equivalents and restricted cash at end of period	21,473	37,583	47,277
Noncash Activity
Capital expenditures in accounts payable	$ 2,909	$ 2,326	$ 1,101