Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Summarized financial information of the reportable segments
Sales	$ 1,144,543	$ 1,087,479
Intersegment sales	0	0
Segment operating income	131,889	113,079
Cost of Goods and Services Sold	775,209	748,511
Selling, General and Administrative Expense	243,177	228,418
Depreciation, Depletion and Amortization	24,402	21,580
Assets	5,483,298	5,149,925	$ 5,500,821
Payments to Acquire Productive Assets	11,738	13,610
Interest Expense, Operating and Nonoperating	(19,175)	(15,317)
Interest Income, Deposits with Financial Institutions	1,745	1,169
Net earnings from affiliates	5,732	2,529
Other Nonoperating Income (Expense)	(17,259)	(874)
Earnings before income taxes	97,200	98,057
Cost of Goods and Services Sold	(775,209)	(748,511)
Selling, General and Administrative Expense	(243,177)	(228,418)
Depreciation, Depletion and Amortization	24,402	21,580
Assets	5,483,298	5,149,925	$ 5,500,821
Payments to Acquire Productive Assets	11,738	13,610
Operating Segments
Summarized financial information of the reportable segments
Sales	1,144,543	1,087,479
Intersegment sales	2,703	2,439
Segment operating income	167,997	145,602
Cost of Goods and Services Sold	778,597	749,285
Selling, General and Administrative Expense	206,385	197,697
Segment Reporting, Other Segment Item, Amount	5,732	2,666
Depreciation, Depletion and Amortization	19,538	16,378
Assets	4,929,679	4,565,291
Payments to Acquire Productive Assets	9,240	12,150
Cost of Goods and Services Sold	(778,597)	(749,285)
Selling, General and Administrative Expense	(206,385)	(197,697)
Segment Reporting, Other Segment Item, Amount	5,732	2,666
Depreciation, Depletion and Amortization	19,538	16,378
Assets	4,929,679	4,565,291
Payments to Acquire Productive Assets	9,240	12,150
Intersegment sales
Summarized financial information of the reportable segments
Sales	0	0
Intersegment sales	(2,703)	(2,439)
Depreciation, Depletion and Amortization	4,864	5,202
Assets	553,619	584,634
Payments to Acquire Productive Assets	2,498	1,460
Depreciation, Depletion and Amortization	4,864	5,202
Assets	553,619	584,634
Payments to Acquire Productive Assets	2,498	1,460
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment
Summarized financial information of the reportable segments
Cost of Goods and Services Sold	3,387	774
Selling, General and Administrative Expense	(36,792)	(30,721)
Net earnings from affiliates	0	(137)
Cost of Goods and Services Sold	(3,387)	(774)
Selling, General and Administrative Expense	36,792	30,721
FPD
Summarized financial information of the reportable segments
Sales	781,489	768,763
FPD | Operating Segments
Summarized financial information of the reportable segments
Sales	781,489	768,763
Intersegment sales	1,651	637
Segment operating income	136,515	110,894
Cost of Goods and Services Sold	514,678	521,462
Selling, General and Administrative Expense	137,680	139,710
Segment Reporting, Other Segment Item, Amount	5,732	2,666
Depreciation, Depletion and Amortization	9,795	11,425
Assets	3,159,095	3,231,614
Payments to Acquire Productive Assets	6,944	9,823
Cost of Goods and Services Sold	(514,678)	(521,462)
Selling, General and Administrative Expense	(137,680)	(139,710)
Segment Reporting, Other Segment Item, Amount	5,732	2,666
Depreciation, Depletion and Amortization	9,795	11,425
Assets	3,159,095	3,231,614
Payments to Acquire Productive Assets	6,944	9,823
FCD | Operating Segments
Summarized financial information of the reportable segments
Sales	363,054	318,716
Intersegment sales	1,052	1,802
Segment operating income	31,482	34,708
Cost of Goods and Services Sold	263,919	227,823
Selling, General and Administrative Expense	68,705	57,987
Segment Reporting, Other Segment Item, Amount	0	0
Depreciation, Depletion and Amortization	9,743	4,953
Assets	1,770,584	1,333,677
Payments to Acquire Productive Assets	2,296	2,327
Cost of Goods and Services Sold	(263,919)	(227,823)
Selling, General and Administrative Expense	(68,705)	(57,987)
Segment Reporting, Other Segment Item, Amount	0	0
Depreciation, Depletion and Amortization	9,743	4,953
Assets	1,770,584	1,333,677
Payments to Acquire Productive Assets	$ 2,296	$ 2,327