Consolidated Balance Sheets (unaudited) (USD $) In Thousands, unless otherwise specified	Nov. 30, 2013	Mar. 02, 2013
Current assets
Cash and cash equivalents	$ 19,853	$ 37,767
Short-term available for sale securities	2,689	26,007
Restricted short-term investments	0	21,804
Receivables, net of allowance for doubtful accounts	144,800	121,170
Inventories	46,502	36,052
Refundable income taxes	0	1,371
Deferred tax assets	540	2,218
Other current assets	5,747	5,452
Total current assets	220,131	251,841
Property, plant and equipment, net	175,831	168,948
Available-for-sale Securities, Debt Securities, Noncurrent	11,103	12,807
Restricted investments	23,678	4,639
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	234	0
Goodwill	91,509	61,342
Intangible assets	12,510	13,675
Other assets	10,417	6,889
Total assets	545,413	520,141
Current liabilities
Accounts payable	50,369	34,235
Accrued payroll and related benefits	21,240	26,732
Accrued self-insurance reserves	5,441	6,145
Other current liabilities	27,951	23,643
Billings in excess of costs and earnings on uncompleted contracts	15,968	21,355
Current portion long-term debt	26	10,057
Accrued income taxes	4,540	0
Total current liabilities	125,535	122,167
Long-term debt	20,689	20,756
Unrecognized tax benefits	5,970	6,765
Long-term self-insurance reserves	8,828	8,030
Deferred tax liabilities	0	3,480
Other non-current liabilities	37,208	25,625
Commitments and contingent liabilities (Note 13)
Shareholders' equity
Common stock of $0.33-1/3 par value; authorized 50,000,000 shares; issued and outstanding 28,799,392 and 28,513,536, respectively	9,600	9,505
Additional paid-in capital	126,373	119,759
Retained earnings	220,665	211,135
Common stock held in trust	(783)	(761)
Deferred compensation obligations	783	761
Accumulated other comprehensive loss	(9,455)	(7,081)
Total shareholders’ equity	347,183	333,318
Total liabilities and shareholders' equity	$ 545,413	$ 520,141