Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Nov. 26, 2011	Feb. 26, 2011
Assets
Cash and cash equivalents	$ 25,924	$ 24,302
Short-term marketable securities available for sale	6,834	11,163
Restricted short-term investments	13,595	25,086
Receivables, net of allowance for doubtful accounts	121,480	100,967
Inventories	36,917	32,608
Refundable income taxes	10,091	11,567
Deferred tax assets	4,123	5,180
Other current assets	2,416	3,050
Total current assets	221,380	213,923
Property, plant and equipment, net	161,770	179,201
Marketable securities available for sale	13,361	15,709
Restricted investments	9,593	10,717
Goodwill	61,635	62,004
Intangible assets	16,921	19,655
Other assets	9,926	9,889
Total assets	494,586	511,098
Liabilities and Shareholders' Equity
Accounts payable	38,057	34,943
Accrued payroll and related benefits	20,837	20,140
Accrued self-insurance reserves	3,661	6,330
Other accrued expenses	20,818	24,117
Current liabilities of discontinued operations	789	4,023
Billings in excess of costs and earnings on uncompleted contracts	19,756	23,406
Current portion long-term debt	216	987
Total current liabilities	104,134	113,946
Long-term debt	20,962	21,442
Unrecognized tax benefits	9,880	13,848
Long-term self-insurance reserves	9,811	9,270
Deferred tax liabilities	5,667	4,863
Other long-term liabilities	23,144	19,410
Liabilities of discontinued operations	576	642
Commitments and contingent liabilities (Note 14)
Shareholders' equity
Common stock of $0.33-1/3 par value; authorized 50,000,000 shares; issued and outstanding 28,045,156 and 28,104,627, respectively	9,348	9,368
Additional paid-in capital	111,220	108,991
Retained earnings	203,121	210,203
Common stock held in trust	(771)	(751)
Deferred compensation obligations	771	751
Accumulated other comprehensive loss	(3,277)	(885)
Total shareholders' equity	320,412	327,677
Total liabilities and shareholders' equity	$ 494,586	$ 511,098