Loans - Narrative (Details)	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2023 USD ($) loan	Jun. 30, 2023 USD ($) loan	Dec. 31, 2022 USD ($) loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchase credit deteriorated loans	$ 3,781,743,000	$ 3,781,743,000	$ 3,740,766,000
Interest income on non-accrual loans	$ 21,000	$ 37,000	32,000
Troubled debt restructurings			0
Allowance for troubled debt restructurings			0
Additional lending amount to customers whose loan terms has been modified in troubled debt restructuring			$ 0
Number of loans modified as troubled debt restructurings | loan	0	0	0
Number of loans modified as troubled debt restructuring subsequently defaulted | loan			0
Threshold amount to individually classify loans by credit risk	$ 250,000	$ 250,000
PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Accrued Interest, after Allowance for Credit Loss	$ 15,779,000	$ 15,779,000	$ 21,149,000