Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Nov. 30, 2012	May 31, 2012
Current Assets:
Cash	$ 9,670	$ 12,011
Restricted cash	600
U.S. Treasury Bills, at cost plus accrued interest	13,998	16,998
Accounts receivable	8,356	11,199
Note receivable, current	45
Inventories	10,711	8,359
Other current assets	3,970	2,903
Total Current Assets	47,350	51,470
Note Receivable, non-current	1,655
Property, Plant and Equipment, at Cost:
Land	3,918	3,918
Buildings and improvements	40,896	40,891
Machinery and equipment	18,053	18,122
Property, Plant and Equipment gross	62,867	62,931
Less accumulated depreciation	46,653	45,856
Net operating property, plant and equipment	16,214	17,075
Idle property, net of accumulated depreciation	3,294	4,121
Net Property, Plant and Equipment	19,508	21,196
Other Assets	6,121	6,190
Total Assets	74,634	78,856
Current Liabilities:
Accounts payable, trade	2,914	3,296
Accrued salaries and wages	2,576	2,990
Accrued marketing programs	3,547	2,215
Accrued warranty and related expenses	4,414	3,870
Accrued workers' compensation	378	435
Other accrued liabilities	1,844	1,875
Total Current Liabilities	15,673	14,681
Other Deferred Liabilities	7,990	8,011
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	111,475	116,668
Treasury stock, at cost, 2,825,900 shares	(65,744)	(65,744)
Total Shareholders' Equity	50,971	56,164
Total Liabilities and Shareholders' Equity	$ 74,634	$ 78,856