Income Taxes, Tax Reconciliation and Tax Cuts and Jobs Act (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Effective tax rate reconciliation, Amount [Abstract]
Taxes at statutory rate		$ 37,285
Tax credits [Abstract]
Research and Development tax credits		(3,674)
Effect of cross-border taxes [Abstract]
Global intangible low-taxed income		474
Foreign derived intangible income		(2,175)
Other effects of cross-border taxes		733
Nontaxable or nondeductible items [Abstract]
Nondeductible compensation		2,452
Other nontaxable or nondeductible items		(155)
Other reconciling items [Abstract]
Changes in unrecognized benefits		198
Other reconciling items		319
Income taxes		$ 43,058	$ 38,132	$ 36,457
Effective tax rate reconciliation, Percent [Abstract]
Taxes at statutory rate		21.00%	21.00%	21.00%
State income taxes, net of federal income tax benefit [Abstract]
State income taxes, net of federal income tax benefit			1.00%	1.10%
Tax credits [Abstract]
Research and Development tax credits		(2.10%)
Tax credits			(1.60%)	(1.90%)
Foreign tax effects [Abstract]
Foreign tax effects earnings			4.10%	4.80%
Effect of cross-border taxes [Abstract]
Global Intangible Low-Taxed Income		0.30%	0.50%	0.60%
Foreign Derived Intangible Income		(1.20%)	(1.20%)	(1.30%)
Other effects of cross-border taxes		0.40%
Nontaxable or nondeductible items [Abstract]
Nondeductible compensation		1.40%	0.90%	1.20%
Other nontaxable or nondeductible items		(0.10%)
Other reconciling items [Abstract]
Changes in unrecognized benefits		0.10%
Other reconciling items		0.20%
Resolution of prior years' tax matters			0.60%	0.30%
Valuation allowance adjustments			(1.40%)	2.80%
Other, net			(0.50%)	(0.50%)
Effective taxes and tax rate		24.30%	23.40%	28.10%
Valuation Allowance [Abstract]
Valuation allowance		$ (29,053)	$ (29,743)
Wisconsin [Member]
State income taxes, net of federal income tax benefit [Abstract]
State income taxes, net of federal income tax benefit	[1]	$ (1,053)
State income taxes, net of federal income tax benefit [Abstract]
State income taxes, net of federal income tax benefit	[1]	(0.60%)
Other State Income Taxes [Member]
State income taxes, net of federal income tax benefit [Abstract]
State income taxes, net of federal income tax benefit	[1]	$ 1,140
State income taxes, net of federal income tax benefit [Abstract]
State income taxes, net of federal income tax benefit	[1]	0.60%
Germany [Member]
Foreign tax effects [Abstract]
Foreign statutory tax rate difference		$ (1,622)
Enacted change in tax rate impact on deferred items		(1,726)
Local taxes		$ 4,039
Foreign tax effects [Abstract]
Foreign tax effects earnings		(0.90%)
Enacted change in tax rate impact on deferred items		(1.00%)
Local taxes		2.30%
Other Foreign Jurisdictions [Member]
Foreign tax effects [Abstract]
Foreign statutory tax rate difference		$ 6,823
Foreign tax effects [Abstract]
Foreign tax effects earnings		3.90%

[1] Wisconsin had a release of a valuation allowance related to its net operating loss. The states that make up the majority of the Other state income taxes category are California and Illinois.