Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Mar. 04, 2017	Feb. 27, 2016	Feb. 28, 2015
Operating Activities
Net earnings	$ 85,790	$ 65,342	$ 50,516
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	35,607	31,248	29,423
Share-based compensation	6,000	4,900	4,793
Deferred income taxes	(1,065)	(6,139)	4,274
Gain on disposal of assets	(371)	(198)	(933)
Proceeds from new markets tax credit transaction, net of deferred costs	5,109	0	0
Other, net	(2,331)	1,017	229
Changes in operating assets and liabilities:
Receivables	3,460	(2,918)	(18,588)
Inventories	(6,387)	(2,798)	(8,660)
Accounts payable and accrued expenses	17,449	17,265	12,871
Billings in excess of costs and earnings on uncompleted contracts	(9,991)	9,657	(324)
Refundable and accrued income taxes	(9,647)	12,589	(1,091)
Other, net	392	(1,045)	(711)
Net cash provided by operating activities	124,001	128,943	71,799
Investing Activities
Capital expenditures	(68,061)	(42,037)	(27,220)
Purchases of marketable securities	(3,705)	(35,814)	(6,142)
Sales/maturities of marketable securities	36,433	4,047	6,946
Acquisition of business and intangibles	(137,932)	0	0
Change in restricted cash	(7,834)	0	0
Other, net	(2,659)	(4,052)	1,941
Net cash used in investing activities	(183,758)	(77,856)	(24,475)
Financing Activities
Borrowings on line of credit	121,000	0	0
Payments on line of credit	(76,012)	0	0
Payments on debt, net	(396)	(56)	(139)
Shares withheld for taxes, net of stock issued to employees	(446)	(3,254)	(3,905)
Repurchase and retirement of common stock	(10,817)	(24,911)	(6,894)
Dividends paid	(14,667)	(13,184)	(12,071)
Net cash provided by (used in) financing activities	18,662	(41,405)	(23,009)
(Decrease) increase in cash and cash equivalents	(41,095)	9,682	24,315
Effect of exchange rates on cash	88	(1,397)	(595)
Cash and cash equivalents at beginning of year	60,470	52,185	28,465
Cash and cash equivalents at end of period	19,463	60,470	52,185
Noncash Activity
Capital expenditures in accounts payable	$ 3,254	$ 2,737	$ 2,656