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Commitments and Contingencies - Narrative (Details)	3 Months Ended			6 Months Ended	9 Months Ended
	Sep. 30, 2024 USD ($) letter_of_credit	Jun. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) letter_of_credit	Sep. 30, 2024 USD ($) letter_of_credit	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($) letter_of_credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Provision for loan credit losses	$ 4,644,000		$ 3,510,000		$ 14,169,000	$ 13,932,000
Professional services	2,012,000		$ 1,409,000		4,546,000	$ 4,491,000
Loss Contingency Loans
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Provision for loan credit losses	0	$ 3,200,000			7,300,000
Additional provision for loan credit losses		$ 4,100,000
Loss contingency accrual expenses				$ 2,300,000
Interest expense accrual	1,200,000			1,200,000	1,200,000
Professional services				1,100,000
Lending-related Commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Reserve for lending related commitments	$ 3,400,000			$ 3,400,000	$ 3,400,000		$ 4,700,000
Letter of credit | FHLB
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Number of instruments | letter_of_credit	39			39	39		31
Maximum borrowing capacity	$ 729,200,000			$ 729,200,000	$ 729,200,000		$ 693,600,000

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