Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Jul. 31, 2018	Jul. 31, 2017
OPERATING ACTIVITIES
Net income	$ 24,767,000	$ 22,281,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	23,018,000	5,536,000
Net loss on disposal of property, plant and equipment	354,000	32,000
Amortization of debt issuance costs	700,000	0
Unrealized gain on foreign exchange forward contracts	(794,000)	0
Gain on insurance recoveries	(580,000)	0
Stock-based compensation expense	786,000	945,000
Deferred income taxes	(1,744,000)	1,650,000
Pension contributions in excess of expense	(1,545,000)	(1,841,000)
Contributions of employer stock to employee benefit plan	3,623,000	3,554,000
Other non-cash items	(456,000)	(258,000)
Changes in operating assets and liabilities:
Customer receivables	4,758,000	406,000
Income taxes receivables	8,153,000	0
Inventories	(8,270,000)	(1,826,000)
Prepaid expenses and other assets	835,000	(1,260,000)
Accounts payable	(7,793,000)	(410,000)
Accrued compensation and related expenses	1,741,000	(7,556,000)
Income taxes payable	0	6,293,000
Marketing and other accrued expenses	5,384,000	(976,000)
Net cash provided by operating activities	52,937,000	26,570,000
INVESTING ACTIVITIES
Payments to acquire property, plant and equipment	(9,309,000)	(10,643,000)
Proceeds from sales of property, plant and equipment	9,000	2,000
Proceeds from insurance recoveries	580,000	0
Acquisition of business, net of cash acquired	(7,182,000)	0
Purchases of certificates of deposit	0	17,250,000
Maturities of certificates of deposit	1,750,000	7,750,000
Investment in promotional displays	(2,254,000)	(1,037,000)
Net cash used by investing activities	(16,406,000)	(21,178,000)
FINANCING ACTIVITIES
Payments of long-term debt	(63,516,000)	(455,000)
Proceeds from long-term debt	0	734,000
Proceeds from issuance of common stock	500,000	1,257,000
Repurchase of common stock	0	(5,562,000)
Withholding of employee taxes related to stock-based compensation	(1,739,000)	(2,747,000)
Net cash used by financing activities	(64,755,000)	(6,773,000)
Net decrease in cash and cash equivalents	(28,224,000)	(1,381,000)
Cash and cash equivalents, beginning of period	78,410,000	176,978,000
Cash and cash equivalents, end of period	50,186,000	175,597,000
Non-cash investing and financing activities:
Property, plant and equipment included in accounts payable at period end	2,052	0
Cash paid during the period for:
Interest	4,756	93
Income taxes	$ 1,623	$ 1,123