Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Jul. 31, 2012	Jul. 31, 2011
Condensed Consolidated Statements Of Operations [Abstract]
Net sales	$ 148,252	$ 131,199
Cost of sales and distribution	126,209	112,792
Gross Profit	22,043	18,407
Selling and marketing expenses	14,520	15,976
General and administrative expenses	5,639	6,341
Restructuring charges	777	15
Operating Income (Loss)	1,107	(3,925)
Interest expense	151	137
Other income	(59)	(154)
Income (Loss) Before Income Taxes	1,015	(3,908)
Income tax expense (benefit)	454	(1,192)
Net Income (Loss)	$ 561	$ (2,716)
Weighted Average Shares Outstanding
Basic	14,415,608	14,299,683
Diluted	14,576,158	14,299,683
Net earnings (loss) per share
Basic	$ 0.04	$ (0.19)
Diluted	$ 0.04	$ (0.19)
Cash dividends per share	$ 0.00	$ 0.09