Consolidated Statements of Operations and Retained Earnings (Unaudited) (USD $) In Thousands, except Share data	3 Months Ended
	Aug. 31, 2011	Aug. 31, 2010
OPERATIONS
Net sales	$ 50,284	$ 45,827
Cost of sales	49,240	44,080
Gross profit	1,044	1,747
Selling and administrative expenses	7,896	7,830
Operating loss	(6,852)	(6,083)
Interest income	7	18
Loss before income taxes	(6,845)	(6,065)
Benefit from income taxes
Net loss	(6,845)	(6,065)
Basic loss per share	$ (0.82)	$ (0.72)
Cash dividends per share	$ 0.09	$ 0.18
Weighted average number of common shares outstanding	8,391,244	8,391,244
RETAINED EARNINGS
Balance at beginning of period	137,543	170,211
Net loss	(6,845)	(6,065)
Cash dividends paid	(755)	(1,510)
Balance at end of period	$ 129,943	$ 162,636