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Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Nov. 30, 2013
May 31, 2013
Current Assets:    
Cash $ 9,639 $ 11,838
Restricted cash 600 600
U.S. Treasury Bills, at cost plus accrued interest 5,000 4,000
Accounts receivable 12,114 13,472
Note receivable, current 48 47
Inventories 9,965 8,732
Workers' compensation security deposit 2,597 2,597
Other current assets 632 351
Total Current Assets 40,595 41,637
Note Receivable, non-current 1,606 1,631
Property, Plant and Equipment, at Cost:    
Land 3,918 3,918
Buildings and improvements 40,578 40,960
Machinery and equipment 18,128 17,918
Property, Plant and Equipment gross 62,624 62,796
Less accumulated depreciation 47,655 47,355
Net operating property, plant and equipment 14,969 15,441
Idle property, net of accumulated depreciation 2,465 2,901
Net Property, Plant and Equipment 17,434 18,342
Other Assets 6,347 6,317
Total Assets 65,982 67,927
Current Liabilities:    
Accounts payable, trade 2,094 3,675
Accrued salaries and wages 2,452 2,624
Accrued marketing programs 4,589 1,965
Accrued warranty and related expenses 3,955 3,682
Other accrued liabilities 3,092 2,261
Total Current Liabilities 16,182 14,207
Other Deferred Liabilities 7,741 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 102,563 106,155
Treasury stock, at cost, 2,825,900 shares (65,744) (65,744)
Total Shareholders' Equity 42,059 45,651
Total Liabilities and Shareholders' Equity $ 65,982 $ 67,927