Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2010
OPERATING ACTIVITIES
Net loss	$ (20,786)	$ (20,018)	$ (22,341)
Adjustments to reconcile net loss to net cash provided (used) by operating activities:
Depreciation and amortization	23,387	26,703	30,876
Net loss on disposal of property, plant and equipment	180	209	209
Impairment loss related to restructuring activities	7,913	0	0
Gain on sale of assets held for sale	111	(982)	0
Stock-based compensation expense	3,413	3,995	4,392
Deferred income taxes	(12,290)	(8,185)	(5,800)
Pension contributions (in excess) less than expense	4,528	6,907	5,029
Tax deficit/(benefit) from stock-based compensation	0	(80)	(212)
Other non-cash items	867	(971)	(992)
Changes in operating assets and liabilities:
Customer receivables	(1,533)	(3,514)	(640)
Inventories	115	331	7,302
Income taxes receivable and other assets	(320)	5,709	(9,370)
Accounts payable	923	4,534	(1,035)
Accrued compensation, marketing and other accrued expenses	9,545	(1,442)	(6,126)
Net Cash Provided by Operating Activities	16,053	13,196	1,292
INVESTING ACTIVITIES
Payments to acquire property, plant, and equipment	(6,679)	(4,952)	(2,861)
Proceeds from sales of property, plant, and equipment	15	3	131
Proceeds from sale of assets held for sale	56	2,939	0
Investment in promotional displays	(3,310)	(3,456)	(8,737)
Net Cash Used in Investing Activities	(9,918)	(5,466)	(11,467)
FINANCING ACTIVITIES
Payments of long-term debt	(1,021)	(892)	(10,859)
Proceeds from long-term debt	0	0	10,000
Restricted cash	7,355	0	(14,419)
Tax (deficit)/benefit from stock-based compensation	0	80	212
Proceeds from issuance of common stock and other	18	399	743
Payment of dividends	(1,287)	(5,130)	(5,090)
Net Cash Used in Financing Activities	5,065	(5,543)	(19,413)
Net Increase/(Decrease) in Cash And Cash Equivalents	11,200	2,187	(29,588)
Cash and Cash Equivalents, Beginning of Year	55,420	53,233	82,821
Cash and Cash Equivalents, End of Year	$ 66,620	$ 55,420	$ 53,233