Income Taxes - Tax Effect of Significant Items Comprising the Net Deferred Tax Asset (Liability) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Deferred tax asset:
Benefits from net operating loss carryforwards	$ 11,360	$ 4,918
Long-term incentive compensation plans	12,519	17,524
Investment basis differences	11,890	10,286
Depreciation and amortization	3,706	3,071
Lease liability	4,324	4,911
Investment in foreign subsidiaries	33,427	26,479
Tax credit carryforward	5,710	6,171
Other, primarily accrued expenses deductible when paid	8,988	6,860
Deferred tax assets, gross	91,924	80,220
Less: valuation allowance	(28,579)	(38,110)
Deferred tax asset	63,345	42,110
Deferred tax liability:
Intangible assets	11,454	10,190
Right-of-use asset	3,730	4,191
Other	3,020	2,808
Deferred tax liability	18,204	17,189
Net deferred tax asset	$ 45,141	$ 24,921