Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
OPERATING ACTIVITIES
Net income	$ 11,926	$ 2,511
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	7,183	7,572
Net (gain) loss on disposal of property, plant and equipment	(10)	100
Gain on sales of assets held for sale	0	(487)
Gain on insurance recoveries	(94)	(399)
Stock-based compensation expense	1,730	1,761
Deferred income taxes	3,085	1,723
Pension contributions in excess of expense	(847)	(2,435)
Tax benefit from stock-based compensation	(475)	0
Other non-cash items	437	(182)
Changes in operating assets and liabilities:
Customer receivables	(10,261)	(8,752)
Inventories	(2,287)	(5,469)
Prepaid expenses and other assets	(579)	(637)
Accounts payable	3,032	3,483
Accrued compensation and related expenses	611	215
Other accrued expenses	2,361	(1,157)
Net Cash Provided (Used) by Operating Activities	15,812	(2,153)
INVESTING ACTIVITIES
Payments to acquire property, plant, and equipment	(3,793)	(5,129)
Proceeds from sales of property, plant, and equipment	50	75
Proceeds from insurance recoveries	94	399
Proceeds from sales of assets held for sale	0	6,447
Investment in promotional displays	(2,147)	(2,873)
Net Cash Used by Investing Activities	(5,796)	(1,081)
FINANCING ACTIVITIES
Payments of long-term debt	(456)	(336)
Proceeds from issuance of common stock	11,498	0
Tax benefit from stock-based compensation	475	0
Net Cash Provided (Used) by Financing Activities	11,517	(336)
Net Increase (Decrease) in Cash And Cash Equivalents	21,533	(3,570)
Cash And Cash Equivalents, Beginning of Period	96,971	66,620
Cash And Cash Equivalents, End of Period	$ 118,504	$ 63,050