Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Feb. 29, 2020	Mar. 02, 2019	Mar. 03, 2018
Operating Activities
Net earnings	$ 61,914	$ 45,694	$ 79,488
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	46,795	49,798	54,843
Share-based compensation	6,607	6,286	6,205
Deferred income taxes	10,463	(5,506)	3,195
(Gain) loss on disposal of assets	(2,197)	(2,475)	1,037
Impairment on intangible assets	0	3,141	0
Proceeds from new markets tax credit transaction, net of deferred costs	0	8,850	0
Noncash lease expense	12,420	0	0
Other, net	(1,516)	(2,179)	(1,431)
Changes in operating assets and liabilities:
Receivables	(4,217)	18,164	18,172
Inventories	7,142	5,114	10,387
Costs and earnings on contracts in excess of billings	(18,468)	(48,712)	1,134
Accounts payable and accrued expenses	(375)	7,600	(25,627)
Billings in excess of costs and earnings on uncompleted contracts	11,314	9,026	(16,541)
Refundable and accrued income taxes	(8,726)	3,680	315
Operating lease liability	(10,829)	0	0
Other, net	(3,065)	(2,058)	(3,714)
Net cash provided by operating activities	107,262	96,423	127,463
Investing Activities
Capital expenditures	(51,428)	(60,717)	(53,196)
Proceeds from sales of property, plant and equipment	5,307	12,333	1,394
Purchases of marketable securities	(7,012)	(9,213)	(10,244)
Sales/maturities of marketable securities	7,768	6,110	10,476
Acquisition of business and intangibles	0	0	(182,849)
Other, net	(1,673)	(2,209)	851
Net cash used by investing activities	(47,038)	(53,696)	(233,568)
Financing Activities
Borrowings on line of credit	229,000	363,000	385,700
Proceeds from issuance of term debt	150,000	0	0
Payments on line of credit	(406,500)	(333,000)	(235,740)
Repurchase and retirement of common stock	(25,140)	(43,326)	(33,676)
Dividends paid	(18,714)	(17,864)	(16,393)
Other, net	(3,160)	(1,136)	(1,557)
Net cash (used) provided by financing activities	(74,514)	(32,326)	98,334
(Decrease) increase in cash, cash equivalents and restricted cash	(14,290)	10,401	(7,771)
Effect of exchange rates on cash	1	(519)	(167)
Cash, cash equivalents and restricted cash at beginning of year	29,241	19,359	27,297
Cash, cash equivalents and restricted cash at end of year	14,952	29,241	19,359
Noncash Activity
Capital expenditures in accounts payable	2,169	1,703	1,784
Deferred payments on acquisition of business	$ 0	$ 0	$ 7,500