Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net earnings	$ 58,712	$ 46,142
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	23,861	24,463
Stock compensation expense	6,889	5,914
Deferred income taxes	1,778	54
Provision for doubtful accounts	380	(25)
Unrealized loss/(gain) on foreign currency transaction and deferred compensation	188	(401)
Asset impairment charge	23	0
Loss/(gain) on disposal of assets	203	(19)
Changes in assets and liabilities
Accounts receivable	(15,506)	(16,361)
Inventories	(33,141)	(7,949)
Prepaid expenses and other current assets	(1,733)	(2,859)
Accounts payable and accrued expenses	15,075	25,873
Income taxes	(779)	898
Other	(689)	659
Net cash provided by operating activities	55,261	76,389
Cash flows from investing activities:
Cash paid for acquisition, net of cash acquired	(295,660)	0
Capital expenditures and intangible assets acquired	(20,799)	(13,760)
Proceeds from sale of assets	197	240
Investment in affiliates	(150)	0
Net cash used in investing activities	(316,412)	(13,520)
Cash flows from financing activities:
Proceeds from revolving loan	365,000	5,000
Principal payments on revolving loan	(40,000)	(45,000)
Principal payments on acquired debt	(30,648)	0
Principal payments on finance lease	(83)	(78)
Proceeds from stock options exercised	1,328	3,886
Dividends paid	(20,704)	(18,700)
Purchase of common stock	(35,199)	(10,835)
Net cash provided by (used in) financing activities	239,694	(65,727)
Effect of exchange rate changes on cash	(5,599)	(1,811)
Decrease in cash and cash equivalents	(27,056)	(4,669)
Cash and cash equivalents beginning of period	103,239	84,571
Cash and cash equivalents end of period	$ 76,183	$ 79,902