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Securities - Continuous Unrealized Loss Position (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 USD ($) security | Dec. 31, 2022 USD ($) security
Fair value and gross unrealized losses of securities with unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position |  |
Number of Holdings with unrealized losses | 521 | 530
Less Than 12 Months, Fair Value | $ 95,041 | $ 298,369
Less Than 12 Months, Unrealized Losses | (1,320) | (16,312)
12 Months or Greater, Fair Value | 378,544 | 165,296
12 Months or Greater, Unrealized Losses | (46,522) | (34,411)
Fair Value | 473,585 | 463,665
Unrealized Losses | $ (47,842) | $ (50,723)
Percentage debt securities with aggregate depreciation from amortized cost basis | 9.20% | 9.90%
Allowance for available for sale securities | $ 0 |
Accrued interest receivable on securities | $ 4,900 |
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] | Interest Receivable |
U.S. Treasury Securities |  |
Fair value and gross unrealized losses of securities with unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position |  |
Number of Holdings with unrealized losses | security |  | 6
Less Than 12 Months, Fair Value |  | $ 2,330
Less Than 12 Months, Unrealized Losses |  | (41)
Fair Value |  | 2,330
Unrealized Losses |  | $ (41)
Municipal Bonds |  |
Fair value and gross unrealized losses of securities with unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position |  |
Number of Holdings with unrealized losses | security | 212 | 225
Less Than 12 Months, Fair Value | $ 4,052 | $ 59,912
Less Than 12 Months, Unrealized Losses | (17) | (5,321)
12 Months or Greater, Fair Value | 120,527 | 69,424
12 Months or Greater, Unrealized Losses | (19,018) | (19,893)
Fair Value | 124,579 | 129,336
Unrealized Losses | $ (19,035) | $ (25,214)
Mortgage-Backed Securities |  |
Fair value and gross unrealized losses of securities with unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position |  |
Number of Holdings with unrealized losses | security | 128 | 130
Less Than 12 Months, Fair Value | $ 35,719 | $ 123,224
Less Than 12 Months, Unrealized Losses | (310) | (5,427)
12 Months or Greater, Fair Value | 135,829 | 62,882
12 Months or Greater, Unrealized Losses | (16,091) | (12,173)
Fair Value | 171,548 | 186,106
Unrealized Losses | $ (16,401) | $ (17,600)
Corporate Securities |  |
Fair value and gross unrealized losses of securities with unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position |  |
Number of Holdings with unrealized losses | security | 110 | 100
Less Than 12 Months, Fair Value | $ 14,528 | $ 88,486
Less Than 12 Months, Unrealized Losses | (756) | (5,121)
12 Months or Greater, Fair Value | 101,311 | 17,054
12 Months or Greater, Unrealized Losses | (11,123) | (1,968)
Fair Value | 115,839 | 105,540
Unrealized Losses | $ (11,879) | $ (7,089)
SBA Securities |  |
Fair value and gross unrealized losses of securities with unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position |  |
Number of Holdings with unrealized losses | security | 47 | 49
Less Than 12 Months, Fair Value | $ 1,731 | $ 2,498
Less Than 12 Months, Unrealized Losses | (3) | (6)
12 Months or Greater, Fair Value | 7,072 | 9,750
12 Months or Greater, Unrealized Losses | (99) | (153)
Fair Value | 8,803 | 12,248
Unrealized Losses | $ (102) | $ (159)
Asset-Backed Securities |  |
Fair value and gross unrealized losses of securities with unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position |  |
Number of Holdings with unrealized losses | security | 24 | 20
Less Than 12 Months, Fair Value | $ 39,011 | $ 21,919
Less Than 12 Months, Unrealized Losses | (234) | (396)
12 Months or Greater, Fair Value | 13,805 | 6,186
12 Months or Greater, Unrealized Losses | (191) | (224)
Fair Value | 52,816 | 28,105
Unrealized Losses | $ (425) | $ (620)

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