Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Feb. 27, 2021	Feb. 29, 2020	Mar. 02, 2019
Operating Activities
Net earnings	$ 15,436	$ 61,914	$ 45,694
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	51,440	46,795	49,798
Share-based compensation	8,573	6,607	6,286
Deferred income taxes	(6,460)	10,463	(5,506)
Gain on disposal of assets	(18,644)	(2,197)	(2,475)
Impairment expense on goodwill and intangible assets	70,069	0	3,141
Proceeds from new markets tax credit transaction, net of deferred costs	0	0	8,850
Noncash lease expense	12,235	12,420	0
Other, net	(2,088)	(1,516)	(2,179)
Changes in operating assets and liabilities:
Receivables	21,630	(4,217)	18,164
Inventories	(1,440)	7,142	5,114
Costs and earnings on contracts in excess of billings	44,183	(18,468)	(48,712)
Accounts payable and accrued expenses	(32,591)	(375)	7,600
Billings in excess of costs and earnings on uncompleted contracts	(10,351)	11,314	9,026
Refundable and accrued income taxes	2,652	(8,726)	3,680
Operating lease liability	(11,513)	(10,829)	0
Other, net	(1,268)	(3,065)	(2,058)
Net cash provided by operating activities	141,863	107,262	96,423
Investing Activities
Capital expenditures	(26,165)	(51,428)	(60,717)
Proceeds from sales of property, plant and equipment	25,108	5,307	12,333
Purchases of marketable securities	(3,606)	(7,012)	(9,213)
Sales/maturities of marketable securities	2,657	7,768	6,110
Other, net	(141)	(1,673)	(2,209)
Net cash used by investing activities	(2,147)	(47,038)	(53,696)
Financing Activities
Borrowings on line of credit	198,601	229,000	363,000
(Repayment) borrowings on debt	(5,400)	150,000	0
Payments on line of credit	(246,340)	(406,500)	(333,000)
Repurchase and retirement of common stock	(32,878)	(25,140)	(43,326)
Dividends paid	(19,601)	(18,714)	(17,864)
Other, net	(2,258)	(3,160)	(1,136)
Net cash used by financing activities	(107,876)	(74,514)	(32,326)
Increase (decrease) in cash, cash equivalents and restricted cash	31,840	(14,290)	10,401
Effect of exchange rates on cash	485	1	(519)
Cash, cash equivalents and restricted cash at beginning of year	14,952	29,241	19,359
Cash, cash equivalents and restricted cash at end of year	47,277	14,952	29,241
Noncash Activity
Capital expenditures in accounts payable	$ 1,101	$ 2,169	$ 1,703