Assets Purchased under Resale Agreements and Sold under Repurchase Agreements - Repurchase Agreements (Details) - USD ($)	3 Months Ended			6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Amount of securities sold under repurchase agreements
Gross repurchase agreements	$ 0			$ 0		$ 300,000,000
Repurchase agreements’ extinguishment cost		$ 3,900,000	$ 0		$ 0
Extinguishment repurchase agreements, amount		$ 300,000,000
Average rate paid	5.43%		2.70%	4.18%	2.66%