Debt (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 15, 2023	Mar. 31, 2023	Sep. 30, 2023	Dec. 31, 2022	Nov. 10, 2021
Debt Instrument [Line Items]
Debt			$ 100,000	$ 199,863
Retirement of senior notes			$ 150,000
FHLBC
Debt Instrument [Line Items]
Amount borrowed from FHLB					$ 50,000
Interest paid monthly at an annualized rate					0.84%
Senior Notes Maturing September 15, 2023
Debt Instrument [Line Items]
Retirement of senior notes	$ 150,000
Line of Credit | PNC
Debt Instrument [Line Items]
Proceeds from line of credit	$ 50,000
Floating interest rate	7.07%
Maximum borrowing capacity - Line of credit		$ 100,000
Maximum borrowing capacity conditional expansion		$ 130,000
Term of facility		3 years
Line of credit facility expiration date		May 29, 2026
Line of Credit | Bank of Montreal, Chicago Branch
Debt Instrument [Line Items]
Maximum borrowing capacity - Line of credit				$ 60,000
Line of credit facility expiration date				Mar. 27, 2023