Corporate Borrowings - Schedule of Outstanding Indebtedness (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024	Nov. 16, 2021
Debt Instrument [Line Items]
Total indebtedness outstanding	$ 276,650	$ 329,450
Less unamortized loan fees	(7,927)	(5,909)
Total indebtedness outstanding, net	268,723	323,541
Less current maturities of long-term debt	(6,400)	(6,400)
Long-term debt	262,323	317,141
Credit Agreement - Revolver, 5.26% (variable rate) due 2030 \| Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Total indebtedness outstanding	$ 57,000	105,000
Credit agreement, interest rate	5.26%
Convertible Senior Notes, 1.88% (fixed rate) due 2041 \| Convertible Debt
Debt Instrument [Line Items]
Total indebtedness outstanding	$ 201,250	201,250
Stated interest rate	1.88%		1.88%
Series A Senior Secured Notes, 3.53% (fixed rate) due 2027 \| Secured Debt
Debt Instrument [Line Items]
Total indebtedness outstanding	$ 6,400	8,800
Stated interest rate	3.53%
Senior Secured Notes, 3.80% (fixed rate) due 2029 \| Secured Debt
Debt Instrument [Line Items]
Total indebtedness outstanding	$ 12,000	$ 14,400
Stated interest rate	3.80%

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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