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SECURITIES (Tables) | 12 Months Ended
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Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract] |
Schedule of Securities | The amortized cost, gross unrealized gains and losses, and estimated fair value of securities at December 31, 2024 and 2023, are summarized as follows (in thousands):
| December 31, 2024
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  |  |  | Fair Value
Available-for-Sale: |  |  |  |  |  |  |  |  |
U.S. Government and agency obligations | $ | 8,492 |  |  | $ | — |  |  | $ | (559) |  |  |  |  | $ | 7,933 |
Municipal bonds | 153,982 |  |  | 453 |  |  | (30,453) |  |  |  |  | 123,982 |
Corporate bonds | 131,379 |  |  | 100 |  |  | (6,489) |  |  |  |  | 124,990 |
Mortgage-backed or related securities | 1,995,805 |  |  | 383 |  |  | (319,340) |  |  |  |  | 1,676,848 |
Asset-backed securities | 170,604 |  |  | 155 |  |  | (1) |  |  |  |  | 170,758 |
| $ | 2,460,262 |  |  | $ | 1,091 |  |  | $ | (356,842) |  |  |  |  | $ | 2,104,511 |
| December 31, 2024
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |  | Allowance for Credit Losses
Held-to-Maturity: |  |  |  |  |  |  |  |  |
U.S. Government and agency obligations | $ | 302 |  |  | $ | — |  |  | $ | (4) |  |  | $ | 298 |  |  | $ | — |
Municipal bonds | 438,196 |  |  | 36 |  |  | (62,809) |  |  | 375,280 |  |  | (143) |
Corporate bonds | 2,658 |  |  | — |  |  | (6) |  |  | 2,498 |  |  | (154) |
Mortgage-backed or related securities | 560,705 |  |  | — |  |  | (113,253) |  |  | 447,452 |  |  | — |
| $ | 1,001,861 |  |  | $ | 36 |  |  | $ | (176,072) |  |  | $ | 825,528 |  |  | $ | (297) |
| December 31, 2023
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  |  |  | Fair Value
Available-for-Sale: |  |  |  |  |  |  |  |  |
U.S. Government and agency obligations | $ | 34,929 |  |  | $ | — |  |  | $ | (740) |  |  |  |  | $ | 34,189 |
Municipal bonds | 161,264 |  |  | 832 |  |  | (29,191) |  |  |  |  | 132,905 |
Corporate bonds | 131,291 |  |  | — |  |  | (12,168) |  |  |  |  | 119,123 |
Mortgage-backed or related securities | 2,179,947 |  |  | 942 |  |  | (314,175) |  |  |  |  | 1,866,714 |
Asset-backed securities | 222,549 |  |  | 300 |  |  | (1,997) |  |  |  |  | 220,852 |
| $ | 2,729,980 |  |  | $ | 2,074 |  |  | $ | (358,271) |  |  |  |  | $ | 2,373,783 |
| December 31, 2023
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |  | Allowance for Credit Losses
Held-to-Maturity: |  |  |  |  |  |  |  |  |
U.S. Government and agency obligations | $ | 307 |  |  | $ | — |  |  | $ | (5) |  |  | $ | 302 |  |  | $ | — |
Municipal bonds | 466,032 |  |  | 687 |  |  | (53,563) |  |  | 412,999 |  |  | (157) |
Corporate bonds | 2,781 |  |  | — |  |  | (20) |  |  | 2,586 |  |  | (175) |
Mortgage-backed or related securities | 590,267 |  |  | — |  |  | (98,640) |  |  | 491,627 |  |  | — |
| $ | 1,059,387 |  |  | $ | 687 |  |  | $ | (152,228) |  |  | $ | 907,514 |  |  | $ | (332) |
Schedule of Securities with Continuous Loss Position | , the gross unrealized losses and the fair value for securities—available-for-sale aggregated by the length of time that individual securities have been in a continuous unrealized loss position were as follows (in thousands):
| December 31, 2024
| Less Than 12 Months |  | 12 Months or More |  | Total
| Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
Available-for-Sale: |  |  |  |  |  |  |  |  |  |  |
U.S. Government and agency obligations | $ | — |  |  | $ | — |  |  | $ | 7,933 |  |  | $ | (559) |  |  | $ | 7,933 |  |  | $ | (559) |
Municipal bonds | 15,497 |  |  | (287) |  |  | 91,156 |  |  | (30,166) |  |  | 106,653 |  |  | (30,453) |
Corporate bonds | 2,541 |  |  | (59) |  |  | 96,763 |  |  | (6,430) |  |  | 99,304 |  |  | (6,489) |
Mortgage-backed or related securities | 44,749 |  |  | (524) |  |  | 1,552,613 |  |  | (318,816) |  |  | 1,597,362 |  |  | (319,340) |
Asset-backed securities | 20,000 |  |  | (1) |  |  | — |  |  | — |  |  | 20,000 |  |  | (1) |
| $ | 82,787 |  |  | $ | (871) |  |  | $ | 1,748,465 |  |  | $ | (355,971) |  |  | $ | 1,831,252 |  |  | $ | (356,842) |
| December 31, 2023
| Less Than 12 Months |  | 12 Months or More |  | Total
| Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
Available-for-Sale: |  |  |  |  |  |  |  |  |  |  |
U.S. Government and agency obligations | $ | — |  |  | $ | — |  |  | $ | 34,189 |  |  | $ | (740) |  |  | $ | 34,189 |  |  | $ | (740) |
Municipal bonds | 6,049 |  |  | (7) |  |  | 103,511 |  |  | (29,184) |  |  | 109,560 |  |  | (29,191) |
Corporate bonds | 15,720 |  |  | (46) |  |  | 106,852 |  |  | (12,122) |  |  | 122,572 |  |  | (12,168) |
Mortgage-backed or related securities | 71,150 |  |  | (212) |  |  | 1,712,125 |  |  | (313,963) |  |  | 1,783,275 |  |  | (314,175) |
Asset-backed securities | 115,162 |  |  | (1,212) |  |  | 85,840 |  |  | (785) |  |  | 201,002 |  |  | (1,997) |
| $ | 208,081 |  |  | $ | (1,477) |  |  | $ | 2,042,517 |  |  | $ | (356,794) |  |  | $ | 2,250,598 |  |  | $ | (358,271) |
Schedule of Realized Gain (Loss) | The following table presents gross gains and losses on sales and partial calls of securities—available-for-sale (in thousands):
|  |  | For the Year Ended December 31,
|  |  |  |  | 2024 |  | 2023 |  | 2022
Available-for-Sale: |  |  |  |  |  |  |  |  |
Gross Gains |  |  |  |  | $ | 36 |  |  | $ | 383 |  |  | $ | 522 |
Gross Losses |  |  |  |  | (5,529) |  |  | (19,625) |  |  | (3,770) |
Balance, end of the period |  |  |  |  | $ | (5,493) |  |  | $ | (19,242) |  |  | $ | (3,248) |
Schedule of Securities by Contractual Maturity Date | The following table presents the amortized cost and estimated fair value of securities at December 31, 2024, by contractual maturity and does not reflect any required periodic payments (in thousands). Expected maturities will differ from contractual maturities because some securities may be called or prepaid with or without call or prepayment penalties.
|  |  |  |  | December 31, 2024
|  |  | Available-for-Sale |  | Held-to-Maturity
|  |  |  |  | Amortized Cost |  | Fair Value |  | Amortized Cost |  | Fair Value
Maturing within one year |  |  |  |  | $ | 23,515 |  |  | $ | 23,286 |  |  | $ | 3,651 |  |  | $ | 3,492 |
Maturing after one year through five years |  |  |  |  | 135,410 |  |  | 128,115 |  |  | 19,325 |  |  | 18,790 |
Maturing after five years through 10 years |  |  |  |  | 422,962 |  |  | 388,640 |  |  | 34,010 |  |  | 31,511 |
Maturing after 10 years |  |  |  |  | 1,878,375 |  |  | 1,564,470 |  |  | 944,875 |  |  | 771,735 |
|  |  |  |  | $ | 2,460,262 |  |  | $ | 2,104,511 |  |  | $ | 1,001,861 |  |  | $ | 825,528 |
Schedule of Pledged Securities | The following table presents, as of December 31, 2024, investment securities which were pledged to secure borrowings, public deposits or other obligations as permitted or required by law (in thousands):
| December 31, 2024
| Carrying Value |  | Amortized Cost |  | Fair Value
Purpose or beneficiary: |  |  |  |  |
State and local governments public deposits | $ | 281,954 |  |  | $ | 296,238 |  |  | $ | 250,692 |
Interest rate swap counterparties | 959 |  |  | 959 |  |  | 769 |
Repurchase transaction accounts | 215,610 |  |  | 215,610 |  |  | 170,700 |
Other | 2,289 |  |  | 2,289 |  |  | 2,094 |
Total pledged securities | $ | 500,812 |  |  | $ | 515,096 |  |  | $ | 424,255 |
Debt Securities, Held-to-maturity, Credit Quality Indicator | The following tables summarize the amortized cost of held-to-maturity debt securities by credit rating at December 31, 2024 and 2023 (in thousands):
| December 31, 2024
| U.S. Government and agency obligations |  | Municipal bonds |  | Corporate bonds |  | Mortgage-backed or related securities |  | Total
AAA/AA/A | $ | — |  |  | $ | 430,158 |  |  | $ | 500 |  |  | $ | 16,218 |  |  | $ | 446,876 |
Not Rated | 302 |  |  | 8,038 |  |  | 2,158 |  |  | 544,487 |  |  | 554,985 |
| $ | 302 |  |  | $ | 438,196 |  |  | $ | 2,658 |  |  | $ | 560,705 |  |  | $ | 1,001,861 |
| December 31, 2023
| U.S. Government and agency obligations |  | Municipal bonds |  | Corporate bonds |  | Mortgage-backed or related securities |  | Total
AAA/AA/A | $ | — |  |  | $ | 456,999 |  |  | $ | 500 |  |  | $ | 16,459 |  |  | $ | 473,958 |
Not Rated | 307 |  |  | 9,033 |  |  | 2,281 |  |  | 573,808 |  |  | 585,429 |
| $ | 307 |  |  | $ | 466,032 |  |  | $ | 2,781 |  |  | $ | 590,267 |  |  | $ | 1,059,387 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | The following tables present the activity in the allowance for credit losses for held-to-maturity debt securities by major type for the year ended December 31, 2024 and 2023 (in thousands):
|  |  | For the Year Ended December 31, 2024
|  |  | Municipal bonds |  | Corporate bonds |  |  |  | Total
Allowance for credit losses – securities |  |  |  |  |  |  |  |  |
Beginning balance |  |  | $ | 157 |  |  | $ | 175 |  |  |  |  | $ | 332 |
Recapture of provision for credit losses |  |  | (14) |  |  | (46) |  |  |  |  | (60) |
Recoveries |  |  | — |  |  | 25 |  |  |  |  | 25 |
Ending balance |  |  | $ | 143 |  |  | $ | 154 |  |  |  |  | $ | 297 |
|  |  | For the Year Ended December 31, 2023
|  |  | Municipal bonds |  | Corporate bonds |  |  |  | Total
Allowance for credit losses – securities |  |  |  |  |  |  |  |  |
Beginning balance |  |  | $ | 183 |  |  | $ | 196 |  |  |  |  | $ | 379 |
Recapture of provision for credit losses |  |  | (26) |  |  | (45) |  |  |  |  | (71) |
Recoveries |  |  | — |  |  | 24 |  |  |  |  | 24 |
Ending balance |  |  | $ | 157 |  |  | $ | 175 |  |  |  |  | $ | 332 |
|  |  | For the Year Ended December 31, 2022
|  |  | Municipal bonds |  | Corporate bonds |  |  |  | Total
Allowance for credit losses – securities |  |  |  |  |  |  |  |  |
Beginning balance |  |  | $ | 203 |  |  | $ | 230 |  |  |  |  | $ | 433 |
Recapture of provision for credit losses |  |  | (20) |  |  | (63) |  |  |  |  | (83) |
Recoveries |  |  | — |  |  | 29 |  |  |  |  | 29 |
Ending balance |  |  | $ | 183 |  |  | $ | 196 |  |  |  |  | $ | 379 |

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