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Consolidated Balance Sheets (unaudited) (USD $)
In Thousands, unless otherwise specified
Jun. 02, 2012
Mar. 03, 2012
Current assets    
Cash and cash equivalents $ 23,028 $ 54,027
Short-term marketable securities available for sale 20,909 11,664
Restricted short-term investments 13,611 13,603
Receivables, net of allowance for doubtful accounts 112,046 108,424
Inventories 38,876 34,045
Refundable income taxes 2,046  
Deferred tax assets 3,745 4,294
Other current assets 3,903 3,382
Total current assets 218,164 229,439
Property, plant and equipment, net 162,921 159,547
Marketable securities available for sale 10,279 7,936
Restricted investments 17,794 9,533
Goodwill 61,694 61,617
Intangible assets 15,767 16,092
Other assets 8,967 8,940
Total assets 495,586 493,104
Current liabilities    
Accounts payable 33,665 34,025
Accrued payroll and related benefits 15,072 23,699
Accrued self-insurance reserves 4,630 4,668
Other accrued expenses 17,406 19,017
Current liabilities of discontinued operations 776 799
Billings in excess of costs and earnings on uncompleted contracts 27,760 22,550
Current portion long-term debt 83 108
Accrued income taxes   905
Total current liabilities 99,392 105,771
Long-term debt 30,912 20,916
Unrecognized tax benefits 8,627 8,918
Long-term self-insurance reserves 8,679 9,605
Deferred tax liabilities 2,414 2,247
Other long-term liabilities 24,121 23,929
Liabilities of discontinued operations 509 520
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 28,287,722 and 28,062,049, respectively 9,429 9,354
Additional paid-in capital 113,898 113,046
Retained earnings 201,844 203,558
Common stock held in trust (753) (745)
Deferred compensation obligations 753 745
Accumulated other comprehensive loss (4,239) (4,760)
Total shareholders' equity 320,932 321,198
Total liabilities and shareholders' equity $ 495,586 $ 493,104