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Fair Value of Financial Instruments - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing asset at fair value, gain (loss) on disposal			$ 410,000
Mortgage servicing rights assets recognized or recorded during period	$ 0	$ 282,000	0	$ 431,000
Carrying value MSR assets	0	19,086,000	0	19,086,000	$ 15,637,000	$ 0	$ 18,261,000	$ 20,824,000
Non-marketable equity securities held in other financial institutions	64,010,000		64,010,000		55,190,000
Impairment recorded on investments in equity securities that do not have readily determinable fair values	0		0
Change in fair value of equity investments	5,188,000	$ 0	5,188,000	$ 0
Loan balance individually evaluated					5,011,000
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loan balance individually evaluated	3,700,000		3,700,000		3,800,000
Foreclosed assets	6,800,000		6,800,000		3,900,000
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Nonrecurring | Real estate | Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residential mortgage loans in the process of foreclosure	$ 669,000		$ 669,000		$ 0
Minimum | Measurement Input, Credit Spread
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Credit spread, securities at fair value through income			0.83%		0.83%
Maximum | Measurement Input, Credit Spread
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Credit spread, securities at fair value through income			2.27%		2.27%

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Amount of financing receivable individually evaluated for credit loss. Excludes financing receivable collectively evaluated for credit loss.

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