Loans - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Deferred loan costs	$ 21,200,000		$ 21,200,000		$ 21,900,000
Nonaccrual interest income	0	$ 0	0	$ 0
Repossessed assets	1,200,000		1,200,000
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Net investment in which foreclosure proceedings have commenced	400,000		400,000
Minimum
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans with an aggregate credit exposure	3,000,000		$ 3,000,000
Loans classified as TDR after a period (in days)			90 days
Minimum | Good Pass
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of consecutive years of profit for good pass rating (in years)			3 years
Number of consecutive years of profit unaudited financial information for good pass rating (in years)			5 years
Number of years of satisfactory relationship with bank for good pass rating (in years)			5 years
Maximum
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans with an aggregate credit exposure	$ 6,000,000		$ 6,000,000
Loans classified as TDR after a period (in days)			120 days
Maximum | Satisfactory Pass
Financing Receivable, Troubled Debt Restructuring [Line Items]
Minimum number of years of satisfactory repayment required for satisfactory pass rating (in years)			2 years