Income Taxes - Tax Effect of Significant Items Comprising the Net Deferred Tax Asset (Liability) (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Deferred tax asset:
Benefits from net operating loss carryforwards	$ 14,242	$ 11,360
Long-term incentive compensation plans	11,295	12,519
Investment basis differences	12,977	11,890
Depreciation and amortization	3,647	3,706
Lease liability	5,940	4,324
Investment in foreign subsidiaries	0	33,427
Capital loss carryforward	34,069	0
Tax credits carryforward	5,300	5,710
Other, primarily accrued expenses deductible when paid	9,181	8,988
Deferred tax assets, gross	96,651	91,924
Less: valuation allowance	(25,996)	(28,579)
Deferred tax asset	70,655	63,345
Deferred tax liability:
Intangible assets	12,254	11,454
Investment in foreign subsidiaries	5,697	0
Right-of-use asset	5,168	3,730
Other	2,485	3,020
Deferred tax liability	25,604	18,204
Net deferred tax asset	$ 45,051	$ 45,141