Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating Activities
Net income	$ 61,987	$ 80,209
Depreciation and amortization	22,088	19,428
Stock-based compensation (Note 10)	10,695	4,352
Pension expense (Note 14)	919	4,430
Deferred income tax benefit (Note 9)	(3,448)	(711)
Loss on asset dispositions, net	48	127
Pension contributions (Note 14)	(3,845)	(3,781)
Currency exchange (gains) losses, net	(459)	1,063
Product liability expense (Note 17)	14,547	2,802
Collections on insurance receivables and notes receivable, insurance companies (Note 17)	6,069	5,736
Product liability payments (Note 17)	(22,574)	(4,672)
Changes in:
Trade receivables	27,248	9,286
Inventories (Note 2)	(21,431)	(46,886)
Accounts payable	(1,563)	8,806
Other current assets and liabilities	(6,503)	3,423
Other noncurrent assets and liabilities	136	(581)
Cash Flow From Operating Activities	83,914	83,031
Investing Activities
Capital expenditures	(20,288)	(19,834)
Acquisition, net of cash acquired (Note 18)	(62,992)	0
Purchase of short-term investments (Note 16)	(74,955)	(119,402)
Proceeds from maturities of short-term investments (Note 16)	100,000	110,000
Property disposals	60	83
Cash Flow Used in Investing Activities	(58,175)	(29,153)
Financing Activities
Proceeds from long-term debt (Note 11)	605,733	581,000
Payments on long-term debt (Note 11)	(578,729)	(590,000)
Debt issuance costs	(1,494)	0
Cash dividends paid	(34,067)	(33,052)
Company stock purchases (Note 6)	(5,511)	(28,254)
Exercise of stock options (Note 6)	2,161	3,740
Employee stock purchase plan (Note 6)	452	390
Cash Flow Used in Financing Activities	(11,455)	(66,176)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(907)	(3,654)
Increase (decrease) in cash, cash equivalents and restricted cash	13,377	(15,952)
Beginning cash, cash equivalents and restricted cash	161,034	152,543
Ending cash, cash equivalents and restricted cash	174,411	136,591
Supplemental cash flow information:
Cash and cash equivalents	174,078	136,238
Restricted cash included in prepaid expenses and other current assets	333	353
Total cash, cash equivalents and restricted cash	$ 174,411	$ 136,591