Borrowings - Long-term Debt (Details) - USD ($)	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Senior Notes
Debt Instrument [Line Items]
Carrying Amount	$ 123,775,000	$ 123,580,000
Senior Subordinated Notes
Debt Instrument [Line Items]
Carrying Amount	182,161,000	181,952,000
Maturing August 2031 | Senior Notes
Debt Instrument [Line Items]
Carrying Amount	$ 98,893,000	98,788,000
Rate	2.875%
Issued Amount	$ 100,000,000
Price	100.00%
Maturing September 2024 | Senior Notes
Debt Instrument [Line Items]
Carrying Amount	$ 24,882,000	24,792,000
Rate	4.50%
Issued Amount	$ 25,000,000
Price	100.00%
Maturing December 2034 | Senior Subordinated Notes
Debt Instrument [Line Items]
Carrying Amount	$ 72,721,000	72,585,000
Rate	5.375%
Issued Amount	$ 74,750,000
Price	100.00%
Maturing June 2029 | Senior Subordinated Notes
Debt Instrument [Line Items]
Carrying Amount	$ 109,440,000	$ 109,367,000
Rate	6.125%
Issued Amount	$ 110,000,000
Price	100.00%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Maturing August 2031 | Senior Notes
Debt Instrument [Line Items]
Spread on variable interest rate	2.35%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Maturing June 2029 | Senior Subordinated Notes
Debt Instrument [Line Items]
Spread on variable interest rate	0.26161%
London Interbank Offered Rate (LIBOR) | Maturing June 2029 | Senior Subordinated Notes
Debt Instrument [Line Items]
Spread on variable interest rate	3.443%