Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 01, 2014	Mar. 02, 2013	Mar. 03, 2012
Operating Activities
Net earnings	$ 27,986	$ 19,111	$ 4,645
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	26,550	26,529	27,246
Stock-based compensation	4,661	4,395	4,412
Deferred income taxes	(5,280)	3,557	(1,115)
Excess tax benefits from stock-based compensation	(2,725)	(483)	(92)
Gain on disposal of assets	(1,629)	(1,954)	(916)
Proceeds from new markets tax credit transaction, net of deferred costs	7,471	0	0
Other, net	51	1,156	516
Changes in operating assets and liabilities:
Receivables	(19,229)	(13,364)	(7,931)
Inventories	(6,130)	(2,209)	(1,635)
Accounts payable and accrued expenses	18,282	11,158	(7,280)
Billings in excess of costs and earnings on uncompleted contracts	1,202	(1,195)	(856)
Refundable and accrued income taxes	3,449	(4,086)	7,887
Other, net	(1,738)	(2,092)	(327)
Net cash provided by operating activities	52,921	40,523	24,554
Investing Activities
Capital expenditures	(41,852)	(34,664)	(9,650)
Proceeds from sales of property, plant and equipment	806	1,078	10,320
Payments to Acquire Businesses, Net of Cash Acquired	53,301	15	68
Purchases of restricted investments	(36,200)	(10,000)	(12,628)
Sales/maturities of restricted investments	60,115	5,472	25,354
Purchases of marketable securities	(14,562)	(58,847)	(28,966)
Sales/maturities of marketable securities	41,020	41,295	35,571
Investments in corporate-owned life insurance policies	0	(1,451)	(1,435)
Net cash (used in) provided by investing activities	(43,974)	(57,132)	18,498
Financing Activities
Proceeds from issuance of debt	0	10,000	121
Payments on debt	(10,082)	(164)	(1,437)
Payments on debt issue costs	(165)	(633)	(159)
Stock issued to employees, net of shares withheld	710	862	(188)
Excess tax benefits from stock-based compensation	2,725	483	92
Repurchase and retirement of common stock	0	0	(2,392)
Dividends paid	(10,764)	(10,316)	(9,153)
Net cash (used in) provided by financing activities	(17,576)	232	(13,116)
(Decrease) increase in cash and cash equivalents	(8,629)	(16,377)	29,936
Effect of exchange rates on cash	(673)	117	(211)
Cash and cash equivalents at beginning of year	37,767	54,027	24,302
Cash and cash equivalents at end of period	28,465	37,767	54,027
Noncash Activity
Capital expenditures in accounts payable	$ 761	$ 553	$ 546