Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2013
OPERATING ACTIVITIES
Net income	$ 35,499	$ 20,461	$ 9,758
Adjustments to reconcile net income to net cash and cash equivalents provided by operating activities:
Depreciation and amortization	14,526	14,545	14,431
Net loss on disposal of property, plant and equipment	153	123	231
Impairment loss related to restructuring activities	0	0	270
Gain on sales of assets held for sale	(250)	(323)	(481)
Gain on insurance recoveries	0	(94)	(975)
Stock-based compensation expense	3,497	3,295	3,509
Deferred income taxes	4,335	7,978	5,789
Pension contributions in excess of expense	(4,604)	(2,039)	(4,299)
Excess tax benefit from stock-based compensation	(1,887)	(854)	(18)
Contributions of employer stock to employee benefit plan	6,217	3,843	2,333
Other non-cash items	(1,211)	(2,634)	(1,389)
Changes in operating assets and liabilities:
Customer receivables	288	(7,546)	(6,825)
Inventories	(5,605)	(2,875)	(7,068)
Prepaid expenses and other assets	126	(1,236)	(1,669)
Accounts payable	5,113	5,869	3,814
Accrued compensation, marketing and other accrued expenses	2,540	2,022	7,116
Net Cash Provided by Operating Activities	58,737	40,535	24,527
INVESTING ACTIVITIES
Payments to acquire property, plant, and equipment	(20,015)	(7,903)	(8,860)
Proceeds from sales of property, plant, and equipment	22	81	80
Proceeds from sales of assets held for sale	1,250	1,644	6,447
Proceeds from insurance recoveries	0	94	975
Investment in certificates of deposit, net	(35,500)	0	0
Investment in promotional displays	(2,363)	(3,499)	(4,759)
Net Cash Used by Investing Activities	(56,606)	(9,583)	(6,117)
FINANCING ACTIVITIES
Payments of long-term debt	(1,309)	(4,516)	(1,019)
Proceeds from long-term debt	1,500	0	0
Change in restricted cash	0	0	7,064
Excess tax benefit from stock-based compensation	1,887	854	18
Proceeds from issuance of common stock	14,268	15,330	5,878
Repurchase of common stock	(5,053)	(3,141)	0
Notes receivable, net	417	(750)	0
Net Cash Provided by Financing Activities	11,710	7,777	11,941
Net Increase in Cash And Cash Equivalents	13,841	38,729	30,351
Cash And Cash Equivalents, Beginning of Year	135,700	96,971	66,620
Cash And Cash Equivalents, End of Year	$ 149,541	$ 135,700	$ 96,971