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v3.25.2

Investment Securities - Additional Information (Details) | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2025 USD ($) security | Jun. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Carrying value of investment securities | $ 2,680,000,000 |  | $ 2,610,000,000 |
Investment securities pledged as collateral | 140,800,000 |  | 162,400,000 |
Available for sale securities sold | 0 | $ 0 |  |
Allowance for credit losses | 2,195,000 | 2,525,000 | 2,195,000 | $ 2,525,000
Allowance for credit losses | 2,005,000 | $ 2,005,000 | 2,005,000 | $ 2,005,000
Debt securities available for sale unrealized loss position | (312,336,000) |  | (338,604,000) |
Fair value of unrealized losses | $ 309,389,000 |  | 334,860,000 |
Percentage of Company's investment portfolio | 38.70% |  |  |
Maturity description of investment portfolio | five years or less |  |  |
Number of investment securities available for sale | security | 1,495 |  |  |
Number of investment in debt securities available-for-sale unrealized loss position | security | 1,260 |  |  |
Number of investment securities held to maturity | security | 513 |  |  |
Number of investments in debt securities held-to-maturity unrealized loss position | security | 502 |  |  |
Unrealized losses | $ (138,321,000) |  | (132,303,000) |
U.S. government-sponsored enterprises |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Allowance for credit losses | 0 |  | 0 |
Allowance for credit losses | 0 |  | 0 |
Debt securities available for sale unrealized loss position | (10,314,000) |  | (14,072,000) |
Fair value of unrealized losses | $ 10,180,000 |  | 13,746,000 |
Number of investment in debt securities available-for-sale unrealized loss position | security | 56 |  |  |
Number of investments in debt securities held-to-maturity unrealized loss position | security | 5 |  |  |
Unrealized losses | $ (2,091,000) |  | (3,021,000) |
U.S. government-sponsored mortgage-backed securities |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Allowance for credit losses | 0 |  | 0 |
Allowance for credit losses | 0 |  | 0 |
Debt securities available for sale unrealized loss position | (171,466,000) |  | (203,539,000) |
Fair value of unrealized losses | $ 171,095,000 |  | 202,451,000 |
Number of investment in debt securities available-for-sale unrealized loss position | security | 626 |  |  |
Number of investments in debt securities held-to-maturity unrealized loss position | security | 19 |  |  |
Unrealized losses | $ (5,303,000) |  | (6,695,000) |
Private mortgage-backed securities |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Allowance for credit losses | 0 |  | 0 |
Debt securities available for sale unrealized loss position | (10,689,000) |  | (13,249,000) |
Fair value of unrealized losses | $ 10,678,000 |  | 13,120,000 |
Number of investment in debt securities available-for-sale unrealized loss position | security | 32 |  |  |
Non-government-sponsored asset backed securities |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Allowance for credit losses | $ 0 |  |  |
Debt securities available for sale unrealized loss position | (1,738,000) |  | (3,434,000) |
Fair value of unrealized losses | $ 1,729,000 |  | 3,374,000 |
Number of investment in debt securities available-for-sale unrealized loss position | security | 21 |  |  |
State and political subdivisions |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Allowance for credit losses | $ 0 |  | 0 |
Allowance for credit losses | 2,005,000 |  | 2,005,000 |
Debt securities available for sale unrealized loss position | (103,071,000) |  | (86,029,000) |
Fair value of unrealized losses | $ 100,707,000 |  | 84,799,000 |
Number of investment in debt securities available-for-sale unrealized loss position | security | 462 |  |  |
Number of investments in debt securities held-to-maturity unrealized loss position | security | 478 |  |  |
Unrealized losses | $ (130,927,000) |  | (122,587,000) |
Other securities |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Allowance for credit losses | 2,195,000 |  | 2,195,000 |
Debt securities available for sale unrealized loss position | (15,058,000) |  | (18,281,000) |
Fair value of unrealized losses | $ 15,000,000 |  | $ 17,370,000 |
Number of investment in debt securities available-for-sale unrealized loss position | security | 63 |  |  |

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