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Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Aug. 31, 2013
May 31, 2013
Current Assets:    
Cash $ 9,132 $ 11,838
Restricted cash 600 600
U.S. Treasury Bills, at cost plus accrued interest 7,000 4,000
Accounts receivable 12,993 13,472
Note receivable, current 47 47
Inventories 9,851 8,732
Workers' compensation security deposit 2,597 2,597
Other current assets 464 351
Total Current Assets 42,684 41,637
Note Receivable, non-current 1,619 1,631
Property, Plant and Equipment, at Cost:    
Land 3,918 3,918
Buildings and improvements 40,485 40,960
Machinery and equipment 17,930 17,918
Property, Plant and Equipment gross 62,333 62,796
Less accumulated depreciation 47,392 47,355
Net operating property, plant and equipment 14,941 15,441
Idle property, net of accumulated depreciation 2,831 2,901
Net Property, Plant and Equipment 17,772 18,342
Other Assets: 6,326 6,317
Total Assets 68,401 67,927
Current Liabilities:    
Accounts payable, trade 3,721 3,675
Accrued salaries and wages 2,343 2,624
Accrued marketing programs 3,413 1,965
Accrued warranty and related expenses 3,799 3,682
Other accrued liabilities 2,981 2,261
Total Current Liabilities 16,257 14,207
Other Deferred Liabilities 7,872 8,069
Commitments and Contingencies - See Note 8      
Shareholders' Equity:    
Common stock, $.0277 par value, 15,000,000 shares authorized; issued 11,217,144 shares 312 312
Additional paid-in capital 4,928 4,928
Retained earnings 104,776 106,155
Treasury stock, at cost, 2,825,900 shares (65,744) (65,744)
Total Shareholders' Equity 44,272 45,651
Total Liabilities and Shareholders' Equity $ 68,401 $ 67,927