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Securities - Narrative (Details)	Mar. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($)	Mar. 31, 2023 USD ($)
Schedule of Held-to-maturity Securities [Line Items]
Number of securities in an unrealized loss position | security	595
Held-to-maturity securities, accrued interest	$ 5,600,000		$ 7,500,000
Held to maturity, amortized cost	11,675,000
Held-to-maturity securities, nonaccrual status	0	$ 0
Available for sale, past due	1,349,979,000	1,407,675,000
Available-for-sale, nonaccrual	0	0
Total Past Due
Schedule of Held-to-maturity Securities [Line Items]
Held to maturity, amortized cost	0	0
Available for sale, past due	$ 0	$ 0

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