Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2010
Consolidated Statements Of Operations [Abstract]
Net sales	$ 515,814	$ 452,589	$ 406,540
Cost of sales and distribution	449,339	399,838	357,619
Gross Profit	66,475	52,751	48,921
Selling and marketing expenses	58,271	61,034	56,935
General and administrative expenses	25,329	22,709	26,434
Restructuring charges	16,321	62	2,808
Operating Loss	(33,446)	(31,054)	(37,256)
Interest expense	527	572	637
Other income	(685)	(1,666)	(838)
Loss Before Income Taxes	(33,288)	(29,960)	(37,055)
Income tax benefit	(12,502)	(9,942)	(14,714)
Net Loss	$ (20,786)	$ (20,018)	$ (22,341)
Net loss per share
Basic	$ (1.45)	$ (1.40)	$ (1.58)
Diluted	$ (1.45)	$ (1.40)	$ (1.58)
Cash dividends per share	$ 0.09	$ 0.36	$ 0.36