Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Oct. 31, 2011	Oct. 31, 2010
Operating Activities
Net loss	$ (5,692)	$ (10,802)
Adjustments to reconcile net loss to net cash provided (used) by operating activities:
Depreciation and amortization	11,486	13,817
Net loss on disposal of property, plant, and equipment	69	67
Gain on sale of assets held for sale	0	(60)
Stock-based compensation expense	1,833	1,800
Deferred income taxes	(2,929)	(5,454)
Pension contributions less than expense	3,215	3,454
Tax benefit from stock-based compensation	0	(57)
Other non-cash items	(854)	(553)
Changes in operating assets and liabilities:
Customer receivables	2,534	71
Inventories	(346)	1,072
Income taxes receivable and other assets	449	6,254
Accounts payable	(3,140)	901
Accrued compensation and related expenses	2,456	(4,178)
Other accrued expenses	(1,202)	1,259
Net Cash Provided by Operating Activities	7,879	7,591
Investing Activities
Payments to acquire property, plant, and equipment	(2,990)	(2,264)
Proceeds from sales of property, plant, and equipment	15	2
Proceeds from sale of assets held for sale	0	1,474
Investment in promotional displays	(1,665)	(1,638)
Net Cash Used by Investing Activities	(4,640)	(2,426)
Financing Activities
Payments of long-term debt	(309)	(274)
Proceeds from issuance of common stock	18	247
Payment of dividends	(1,287)	(2,562)
Tax benefit from stock-based compensation	0	57
Net Cash Used by Financing Activities	(1,578)	(2,532)
Net Increase In Cash And Cash Equivalents	1,661	2,633
Cash And Cash Equivalents, Beginning of Period	55,420	53,233
Cash And Cash Equivalents, End of Period	$ 57,081	$ 55,866