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Loans and Allowance for Credit Losses - Additional information (Details)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2023 USD ($) loan	Sep. 30, 2023 USD ($) loan	Dec. 31, 2022 USD ($) loan
Loans and Allowance for Credit Losses
Accrued interest receivable on loans	$ 10,800,000	$ 10,800,000
Number of loans modified | loan	0	1	2
Aggregate outstanding balances of troubled debt restructurings	$ 9,600,000	$ 9,600,000	$ 188,000
Forgiveness of principal		$ 0

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- Definition

Amount, after allowance for credit loss, of accrued interest on financing receivable.

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Number of financing receivables that have been modified by troubled debt restructurings.

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Amortized cost of financing receivable modified during period for debtor experiencing financial difficulty.

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