Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Jul. 31, 2020	Jul. 31, 2019
OPERATING ACTIVITIES
Net income	$ 16,485,000	$ 26,881,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	26,352,000	24,113,000
Net loss on disposal of property, plant and equipment	46,000	66,000
Reduction in the carrying amount of operating lease right-of-use assets	6,706,000	5,344,000
Amortization of debt issuance costs	630,000	662,000
Unrealized gain on foreign exchange forward contracts	1,255,000	56,000
Stock-based compensation expense	961,000	897,000
Deferred income taxes	(2,855,000)	(1,726,000)
Pension contributions in excess of expense	(502,000)	(461,000)
Contributions of employer stock to employee benefit plan	3,743,000	3,772,000
Other non-cash items	750,000	451,000
Changes in operating assets and liabilities:
Customer receivables	(17,524,000)	5,426,000
Inventories	(15,539,000)	(7,137,000)
Prepaid expenses and other assets	(465,000)	(1,094,000)
Accounts payable	5,979,000	4,876,000
Accrued compensation and related expenses	(371,000)	(10,613,000)
Operating lease liabilities	(6,142,000)	(5,109,000)
Marketing and other accrued expenses	12,636,000	5,633,000
Net cash provided by operating activities	40,000,000	62,612,000
INVESTING ACTIVITIES
Payments to acquire property, plant and equipment	(5,183,000)	(4,360,000)
Proceeds from sales of property, plant and equipment	6,000	13,000
Maturities of certificates of deposit	0	1,000,000
Investment in promotional displays	(2,659,000)	(2,233,000)
Net cash used by investing activities	(7,836,000)	(5,580,000)
FINANCING ACTIVITIES
Payments of long-term debt	(634,000)	(42,589,000)
Withholding of employee taxes related to stock-based compensation	(534,000)	(1,050,000)
Net cash used by financing activities	(1,168,000)	(43,639,000)
Net increase in cash and cash equivalents	30,996,000	13,393,000
Cash and cash equivalents, beginning of period	97,059,000	57,656,000
Cash and cash equivalents, end of period	128,055,000	71,049,000
Non-cash investing and financing activities:
Property, plant and equipment included in accounts payable at period end	502	1,014
Cash paid during the period for:
Interest	1,195	3,554
Income taxes	$ 974	$ 607