Condensed Consolidated Statement of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating Activities
Net income	$ 36,600	$ 43,802
Depreciation and amortization	10,504	9,640
Stock-based compensation (Note 10)	3,293	3,522
Pension (income) expense (Note 14)	(480)	2,216
Deferred income tax benefit (Note 9)	(595)	(546)
Loss on asset dispositions, net	19	122
Pension contributions (Note 14)	(1,923)	(1,891)
Currency exchange (gains) losses, net	(2,099)	270
Product liability expense (Note 17)	2,796	1,951
Collections on insurance receivables and notes receivable, insurance companies (Note 17)	1,765	3,000
Product liability payments (Note 17)	(7,471)	(2,328)
Changes in:
Trade receivables	27,784	(15,339)
Inventories (Note 2)	(10,781)	(18,988)
Accounts payable	532	1,657
Other current assets and liabilities	(13,966)	(12,887)
Other noncurrent assets and liabilities	(362)	(594)
Cash Flow From Operating Activities	45,616	13,607
Investing Activities
Capital expenditures	(9,582)	(6,562)
Acquisition, net of cash acquired (Note 18)	(62,992)	0
Purchase of short-term investments (Note 16)	(44,970)	(69,612)
Proceeds from maturities of short-term investments (Note 16)	65,000	50,000
Property disposals	35	92
Cash Flow Used in Investing Activities	(52,509)	(26,082)
Financing Activities
Proceeds from long-term debt (Note 11)	370,017	378,000
Payments on long-term debt (Note 11)	(318,000)	(350,000)
Cash dividends paid	(16,820)	(16,331)
Company stock purchases (Note 6)	(5,348)	(27,730)
Exercise of stock options (Note 6)	1,790	2,733
Cash Flow From (Used in) Financing Activities	31,639	(13,328)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(720)	(3,756)
Increase (decrease) in cash, cash equivalents and restricted cash	24,026	(29,559)
Beginning cash, cash equivalents and restricted cash	161,034	152,543
Ending cash, cash equivalents and restricted cash	185,060	122,984
Supplemental cash flow information:
Total cash, cash equivalents and restricted cash	$ 185,060	$ 122,984