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Investment Securities (Tables) | 12 Months Ended
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Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract] |
Schedule of Available-for-sale Securities Reconciliation | The following tables present amortized cost, gross unrealized gains and losses, and fair values of AFS securities as of the dates indicated:
| December 31, 2024
|  |  | Allowance |  |  |  | Gross |  | Gross |  |
| Amortized |  | for Credit |  | Net Carrying |  | Unrealized |  | Unrealized |  | Fair
Security Type | Cost |  | Losses |  | Amount |  | Gains |  | Losses |  | Value
| (In thousands)
Agency residential MBS | $ | 1,051,601 |  |  | $ | — |  |  | $ | 1,051,601 |  |  | $ | — |  |  | $ | (189,761) |  |  | $ | 861,840 |
Agency commercial MBS | 52,610 |  |  | — |  |  | 52,610 |  |  | — |  |  | (1,046) |  |  | 51,564 |
Agency residential CMOs | 467,319 |  |  | — |  |  | 467,319 |  |  | 223 |  |  | (20,911) |  |  | 446,631 |
Municipal securities | 602 |  |  | — |  |  | 602 |  |  | — |  |  | (8) |  |  | 594 |
Corporate debt securities | 289,098 |  |  | — |  |  | 289,098 |  |  | — |  |  | (31,386) |  |  | 257,712 |
Private label residential CMOs | 352,615 |  |  | — |  |  | 352,615 |  |  | 7 |  |  | (35,712) |  |  | 316,910 |
Collateralized loan obligations | 278,976 |  |  | — |  |  | 278,976 |  |  | 469 |  |  | (29) |  |  | 279,416 |
Private label commercial MBS | 13,585 |  |  | — |  |  | 13,585 |  |  | — |  |  | (1,213) |  |  | 12,372 |
Asset-backed securities | 15,674 |  |  | — |  |  | 15,674 |  |  | — |  |  | (74) |  |  | 15,600 |
SBA securities | 4,564 |  |  | — |  |  | 4,564 |  |  | — |  |  | (364) |  |  | 4,200 |
Total (1) | $ | 2,526,644 |  |  | $ | — |  |  | $ | 2,526,644 |  |  | $ | 699 |  |  | $ | (280,504) |  |  | $ | 2,246,839 |
_________________________ (1) Excludes accrued interest receivable of $12.6 million at December 31, 2024 which is recorded in "Other assets" on the consolidated balance sheets.
| December 31, 2023
|  |  | Allowance |  |  |  | Gross |  | Gross |  |
| Amortized |  | for Credit |  | Net Carrying |  | Unrealized |  | Unrealized |  | Fair
Security Type | Cost |  | Losses |  | Amount |  | Gains |  | Losses |  | Value
| (In thousands)
Agency residential MBS | $ | 1,388,801 |  |  | $ | — |  |  | $ | 1,388,801 |  |  | $ | — |  |  | $ | (201,192) |  |  | $ | 1,187,609 |
Agency commercial MBS | 268,639 |  |  | — |  |  | 268,639 |  |  | — |  |  | (15,333) |  |  | 253,306 |
Agency residential CMOs | 320,984 |  |  | — |  |  | 320,984 |  |  | — |  |  | (36,650) |  |  | 284,334 |
Municipal securities | 29,192 |  |  | — |  |  | 29,192 |  |  | — |  |  | (1,109) |  |  | 28,083 |
Corporate debt securities | 327,426 |  |  | (199) |  |  | 327,227 |  |  | 259 |  |  | (60,254) |  |  | 267,232 |
Private label residential CMOs | 193,071 |  |  | — |  |  | 193,071 |  |  | — |  |  | (34,659) |  |  | 158,412 |
Collateralized loan obligations | 109,168 |  |  | — |  |  | 109,168 |  |  | — |  |  | (752) |  |  | 108,416 |
Private label commercial MBS | 22,126 |  |  | — |  |  | 22,126 |  |  | — |  |  | (1,313) |  |  | 20,813 |
Asset-backed securities | 20,241 |  |  | — |  |  | 20,241 |  |  | — |  |  | (289) |  |  | 19,952 |
SBA securities | 14,642 |  |  | — |  |  | 14,642 |  |  | — |  |  | (903) |  |  | 13,739 |
U.S. Treasury securities | 4,965 |  |  | — |  |  | 4,965 |  |  | 3 |  |  | — |  |  | 4,968 |
Total (1) | $ | 2,699,255 |  |  | $ | (199) |  |  | $ | 2,699,056 |  |  | $ | 262 |  |  | $ | (352,454) |  |  | $ | 2,346,864 |
_________________________ (1) Excludes accrued interest receivable of $10.0 million at December 31, 2023 which is recorded in "Other assets" on the consolidated balance sheets.
Schedule of Realized Gain (Loss) | The following table presents the amortized cost of securities sold with related gross realized gains, gross realized losses, and net realized (losses) gains for the years indicated:
| Year Ended December 31,
Sales of Securities Available-for-Sale | 2024 |  | 2023 |  | 2022
| (In thousands)
Amortized cost of securities sold | $ | 753,738 |  |  | $ | 3,470,424 |  |  | $ | 2,063,415 |
Gross realized gains | $ | 1,396 |  |  | $ | — |  |  | $ | 6,032 |
Gross realized losses | (61,796) |  |  | (442,413) |  |  | (56,353) |
Net realized losses | $ | (60,400) |  |  | $ | (442,413) |  |  | $ | (50,321) |
Unrealized losses on investment securities | Unrealized Losses on Securities Available-for-Sale The following tables present the gross unrealized losses and fair values of AFS securities that were in unrealized loss positions as of the dates indicated:
| December 31, 2024
| Less Than 12 Months |  | 12 Months or More |  | Total
|  |  | Gross |  |  |  | Gross |  |  |  | Gross
| Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
Security Type | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
| (In thousands)
Agency residential MBS | $ | — |  |  | $ | — |  |  | $ | 861,840 |  |  | $ | (189,761) |  |  | $ | 861,840 |  |  | $ | (189,761) |
Agency commercial MBS | 40,291 |  |  | (87) |  |  | 11,273 |  |  | (959) |  |  | 51,564 |  |  | (1,046) |
Agency residential CMOs | 273,347 |  |  | (1,994) |  |  | 104,757 |  |  | (18,917) |  |  | 378,104 |  |  | (20,911) |
Municipal securities | — |  |  | — |  |  | 594 |  |  | (8) |  |  | 594 |  |  | (8) |
Corporate debt securities | 15,968 |  |  | (32) |  |  | 241,744 |  |  | (31,354) |  |  | 257,712 |  |  | (31,386) |
Private label residential CMOs | 180,915 |  |  | (1,031) |  |  | 129,178 |  |  | (34,681) |  |  | 310,093 |  |  | (35,712) |
Collateralized loan obligations | 38,771 |  |  | (29) |  |  | — |  |  | — |  |  | 38,771 |  |  | (29) |
Private label commercial MBS | — |  |  | — |  |  | 12,372 |  |  | (1,213) |  |  | 12,372 |  |  | (1,213) |
Asset-backed securities | 15,600 |  |  | (74) |  |  | — |  |  | — |  |  | 15,600 |  |  | (74) |
SBA securities | — |  |  | — |  |  | 4,200 |  |  | (364) |  |  | 4,200 |  |  | (364) |
Total | $ | 564,892 |  |  | $ | (3,247) |  |  | $ | 1,365,958 |  |  | $ | (277,257) |  |  | $ | 1,930,850 |  |  | $ | (280,504) |
| December 31, 2023
| Less Than 12 Months |  | 12 Months or More |  | Total
|  |  | Gross |  |  |  | Gross |  |  |  | Gross
| Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
Security Type | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
| (In thousands)
Agency residential MBS | $ | — |  |  | $ | — |  |  | $ | 1,187,609 |  |  | $ | (201,192) |  |  | $ | 1,187,609 |  |  | $ | (201,192) |
Agency commercial MBS | — |  |  | — |  |  | 253,306 |  |  | (15,333) |  |  | 253,306 |  |  | (15,333) |
Agency residential CMOs | — |  |  | — |  |  | 284,334 |  |  | (36,650) |  |  | 284,334 |  |  | (36,650) |
Municipal securities | — |  |  | — |  |  | 28,083 |  |  | (1,109) |  |  | 28,083 |  |  | (1,109) |
Corporate debt securities | — |  |  | — |  |  | 265,431 |  |  | (60,254) |  |  | 265,431 |  |  | (60,254) |
Private label residential CMOs | — |  |  | — |  |  | 158,412 |  |  | (34,659) |  |  | 158,412 |  |  | (34,659) |
Collateralized loan obligations | — |  |  | — |  |  | 66,886 |  |  | (752) |  |  | 66,886 |  |  | (752) |
Private label commercial MBS | — |  |  | — |  |  | 20,813 |  |  | (1,313) |  |  | 20,813 |  |  | (1,313) |
Asset-backed securities | — |  |  | — |  |  | 19,952 |  |  | (289) |  |  | 19,952 |  |  | (289) |
SBA securities | — |  |  | — |  |  | 13,739 |  |  | (903) |  |  | 13,739 |  |  | (903) |
Total | $ | — |  |  | $ | — |  |  | $ | 2,298,565 |  |  | $ | (352,454) |  |  | $ | 2,298,565 |  |  | $ | (352,454) |
Investments Classified by Contractual Maturity Date, Available-For-Sale | The following tables present the contractual maturities of our AFS securities portfolio based on amortized cost and fair value as of the date indicated:
| December 31, 2024
|  |  | Due After |  | Due After |  |  |  |
| Due |  | One Year |  | Five Years |  | Due |  |
| Within |  | Through |  | Through |  | After |  |
Security Type | One Year |  | Five Years |  | Ten Years |  | Ten Years |  | Total
| (In thousands)
Amortized Cost: |  |  |  |  |  |  |  |  |
Agency residential MBS | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1,051,601 |  |  | $ | 1,051,601 |
Agency commercial MBS | — |  |  | 30,384 |  |  | 9,994 |  |  | 12,232 |  |  | 52,610 |
Agency residential CMOs | — |  |  | — |  |  | 14,892 |  |  | 452,427 |  |  | 467,319 |
Municipal securities | — |  |  | 602 |  |  | — |  |  | — |  |  | 602 |
Corporate debt securities | — |  |  | 5,000 |  |  | 284,098 |  |  | — |  |  | 289,098 |
Private label residential CMOs | — |  |  | — |  |  | — |  |  | 352,615 |  |  | 352,615 |
Collateralized loan obligations | — |  |  | 4,535 |  |  | 167,864 |  |  | 106,577 |  |  | 278,976 |
Private label commercial MBS | — |  |  | — |  |  | 996 |  |  | 12,589 |  |  | 13,585 |
Asset-backed securities | — |  |  | — |  |  | — |  |  | 15,674 |  |  | 15,674 |
SBA securities | — |  |  | — |  |  | 4,564 |  |  | — |  |  | 4,564 |
Total | $ | — |  |  | $ | 40,521 |  |  | $ | 482,408 |  |  | $ | 2,003,715 |  |  | $ | 2,526,644 |
| December 31, 2024
|  |  | Due After |  | Due After |  |  |  |
| Due |  | One Year |  | Five Years |  | Due |  |
| Within |  | Through |  | Through |  | After |  |
Security Type | One Year |  | Five Years |  | Ten Years |  | Ten Years |  | Total
| (In thousands)
Fair Value: |  |  |  |  |  |  |  |  |
Agency residential MBS | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 861,840 |  |  | $ | 861,840 |
Agency commercial MBS | — |  |  | 30,312 |  |  | 9,979 |  |  | 11,273 |  |  | 51,564 |
Agency residential CMOs | — |  |  | — |  |  | 14,899 |  |  | 431,732 |  |  | 446,631 |
Municipal securities | — |  |  | 594 |  |  | — |  |  | — |  |  | 594 |
Corporate debt securities | — |  |  | 4,842 |  |  | 252,870 |  |  | — |  |  | 257,712 |
Private label residential CMOs | — |  |  | — |  |  | — |  |  | 316,910 |  |  | 316,910 |
Collateralized loan obligations | — |  |  | 4,539 |  |  | 167,973 |  |  | 106,904 |  |  | 279,416 |
Private label commercial MBS | — |  |  | — |  |  | 976 |  |  | 11,396 |  |  | 12,372 |
Asset-backed securities | — |  |  | — |  |  | — |  |  | 15,600 |  |  | 15,600 |
SBA securities | — |  |  | — |  |  | 4,200 |  |  | — |  |  | 4,200 |
Total | $ | — |  |  | $ | 40,287 |  |  | $ | 450,897 |  |  | $ | 1,755,655 |  |  | $ | 2,246,839 |
Debt Securities, Held-to-maturity | The following tables present amortized cost, allowance for credit losses, gross unrealized gains and losses, and fair values of HTM securities as of the dates indicated:
| December 31, 2024
|  |  | Allowance |  |  |  |  |  |  |  |
|  |  | for |  | Net |  | Gross |  | Gross |  |
| Amortized |  | Credit |  | Carrying |  | Unrealized |  | Unrealized |  | Fair
Security Type | Cost |  | Losses |  | Amount |  | Gains |  | Losses |  | Value
| (In thousands)
Municipal securities | $ | 1,251,364 |  |  | $ | (140) |  |  | $ | 1,251,224 |  |  | $ | 35 |  |  | $ | (54,799) |  |  | $ | 1,196,460 |
Agency commercial MBS | 440,476 |  |  | — |  |  | 440,476 |  |  | — |  |  | (37,840) |  |  | 402,636 |
Private label commercial MBS | 355,342 |  |  | — |  |  | 355,342 |  |  | — |  |  | (26,226) |  |  | 329,116 |
U.S. Treasury securities | 189,985 |  |  | — |  |  | 189,985 |  |  | — |  |  | (16,702) |  |  | 173,283 |
Corporate debt securities | 70,482 |  |  | (1,360) |  |  | 69,122 |  |  | — |  |  | (13,923) |  |  | 55,199 |
Total (1) | $ | 2,307,649 |  |  | $ | (1,500) |  |  | $ | 2,306,149 |  |  | $ | 35 |  |  | $ | (149,490) |  |  | $ | 2,156,694 |
__________________________ (1) Excludes accrued interest receivable of $13.4 million at December 31, 2024 which is recorded in "Other assets" on the consolidated balance sheets.
| December 31, 2023
|  |  | Allowance |  |  |  |  |  |  |  |
|  |  | for |  | Net |  | Gross |  | Gross |  |
| Amortized |  | Credit |  | Carrying |  | Unrealized |  | Unrealized |  | Fair
Security Type | Cost |  | Losses |  | Amount |  | Gains |  | Losses |  | Value
| (In thousands)
Municipal securities | $ | 1,247,310 |  |  | $ | (140) |  |  | $ | 1,247,170 |  |  | $ | 1,760 |  |  | $ | (28,170) |  |  | $ | 1,220,760 |
Agency commercial MBS | 433,827 |  |  | — |  |  | 433,827 |  |  | — |  |  | (30,665) |  |  | 403,162 |
Private label commercial MBS | 350,493 |  |  | — |  |  | 350,493 |  |  | — |  |  | (29,289) |  |  | 321,204 |
U.S. Treasury securities | 187,033 |  |  | — |  |  | 187,033 |  |  | — |  |  | (11,454) |  |  | 175,579 |
Corporate debt securities | 70,128 |  |  | (1,360) |  |  | 68,768 |  |  | — |  |  | (21,157) |  |  | 47,611 |
Total (1) | $ | 2,288,791 |  |  | $ | (1,500) |  |  | $ | 2,287,291 |  |  | $ | 1,760 |  |  | $ | (120,735) |  |  | $ | 2,168,316 |
__________________________ (1) Excludes accrued interest receivable of $13.4 million at December 31, 2023 which is recorded in "Other assets" on the consolidated balance sheets.
Debt Securities, Held-to-maturity, Allowance for Credit Loss | The following tables present the changes by major security type in our allowance for credit losses on HTM securities for the years indicated:
| Year Ended December 31, 2024
| Allowance for |  | Provision |  |  |  |  |  | Allowance for
| Credit Losses, |  | for |  |  |  |  |  | Credit Losses,
| Beginning |  | Credit |  |  |  |  |  | End of
Security Type | of Period |  | Losses |  | Charge-offs |  | Recoveries |  | Period
| (In thousands)
Municipal securities | $ | 140 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 140 |
Corporate debt securities | 1,360 |  |  | — |  |  | — |  |  | — |  |  | 1,360 |
Total | $ | 1,500 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1,500 |
| Year Ended December 31, 2023
| Allowance for |  | Provision |  |  |  |  |  | Allowance for
| Credit Losses, |  | for |  |  |  |  |  | Credit Losses,
| Beginning |  | Credit |  |  |  |  |  | End of
Security Type | of Period |  | Losses |  | Charge-offs |  | Recoveries |  | Period
| (In thousands)
Municipal securities | $ | 140 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 140 |
Corporate debt securities | 1,360 |  |  | — |  |  | — |  |  | — |  |  | 1,360 |
Total | $ | 1,500 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1,500 |
Debt Securities, Held-to-maturity, Credit Quality Indicator | The Company uses S&P, Moody's, Fitch, Kroll, and Egan Jones ratings as the credit quality indicators for its HTM securities. The following tables present our HTM securities portfolio by the lowest available credit rating as of the dates indicated:
| December 31, 2024
Security Type | AAA |  | AA+ |  | AA |  | AA- |  | A |  |  |  | BBB |  | NR |  | Total
| (In thousands)
Amortized Cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Municipal securities | $ | 571,347 |  |  | $ | 369,072 |  |  | $ | 218,581 |  |  | $ | 72,952 |  |  | $ | 1,667 |  |  |  |  | $ | — |  |  | $ | 17,745 |  |  | $ | 1,251,364 |
Agency commercial MBS | — |  |  | 440,476 |  |  | — |  |  | — |  |  | — |  |  |  |  | — |  |  | — |  |  | 440,476 |
Private label commercial MBS | 355,342 |  |  | — |  |  | — |  |  | — |  |  | — |  |  |  |  | — |  |  | — |  |  | 355,342 |
U.S. Treasury securities | — |  |  | 189,985 |  |  | — |  |  | — |  |  | — |  |  |  |  | — |  |  | — |  |  | 189,985 |
Corporate debt securities | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  |  |  | 44,507 |  |  | 25,975 |  |  | 70,482 |
Total | $ | 926,689 |  |  | $ | 999,533 |  |  | $ | 218,581 |  |  | $ | 72,952 |  |  | $ | 1,667 |  |  |  |  | $ | 44,507 |  |  | $ | 43,720 |  |  | $ | 2,307,649 |
| December 31, 2023
Security Type | AAA |  | AA+ |  | AA |  | AA- |  |  |  | A |  |  |  | BBB |  | NR |  | Total
| (In thousands)
Amortized Cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Municipal securities | $ | 564,127 |  |  | $ | 397,542 |  |  | $ | 167,905 |  |  | $ | 86,243 |  |  |  |  | $ | 1,787 |  |  |  |  | $ | — |  |  | $ | 17,699 |  |  | $ | 1,247,310 |
Agency commercial MBS | — |  |  | 433,827 |  |  | — |  |  | — |  |  |  |  | — |  |  |  |  | — |  |  | — |  |  | 433,827 |
Private label commercial MBS | 350,493 |  |  | — |  |  | — |  |  | — |  |  |  |  | — |  |  |  |  | — |  |  | — |  |  | 350,493 |
U.S. Treasury securities | — |  |  | 187,033 |  |  | — |  |  | — |  |  |  |  | — |  |  |  |  | — |  |  | — |  |  | 187,033 |
Corporate debt securities | — |  |  | — |  |  | — |  |  | — |  |  |  |  | — |  |  |  |  | 44,371 |  |  | 25,757 |  |  | 70,128 |
Total | $ | 914,620 |  |  | $ | 1,018,402 |  |  | $ | 167,905 |  |  | $ | 86,243 |  |  |  |  | $ | 1,787 |  |  |  |  | $ | 44,371 |  |  | $ | 43,456 |  |  | $ | 2,288,791 |
Investment Securities Classified by Contractual Maturities Date - Held-to-Maturity | The following tables present the contractual maturities of our HTM securities portfolio based on amortized cost and fair value as of the date indicated:
| December 31, 2024
|  |  | Due After |  | Due After |  |  |  |
| Due |  | One Year |  | Five Years |  | Due |  |
| Within |  | Through |  | Through |  | After |  |
Security Type | One Year |  | Five Years |  | Ten Years |  | Ten Years |  | Total
| (In thousands)
Amortized Cost: |  |  |  |  |  |  |  |  |
Municipal securities | $ | — |  |  | $ | 20,281 |  |  | $ | 449,652 |  |  | $ | 781,431 |  |  | $ | 1,251,364 |
Agency commercial MBS | — |  |  | 31,997 |  |  | 408,479 |  |  | — |  |  | 440,476 |
Private label commercial MBS | — |  |  | — |  |  | 36,846 |  |  | 318,496 |  |  | 355,342 |
U.S. Treasury securities | — |  |  | — |  |  | 189,985 |  |  | — |  |  | 189,985 |
Corporate debt securities | — |  |  | — |  |  | 10,151 |  |  | 60,331 |  |  | 70,482 |
Total | $ | — |  |  | $ | 52,278 |  |  | $ | 1,095,113 |  |  | $ | 1,160,258 |  |  | $ | 2,307,649 |
| December 31, 2024
|  |  | Due After |  | Due After |  |  |  |
| Due |  | One Year |  | Five Years |  | Due |  |
| Within |  | Through |  | Through |  | After |  |
Security Type | One Year |  | Five Years |  | Ten Years |  | Ten Years |  | Total
| (In thousands)
Fair Value: |  |  |  |  |  |  |  |  |
Municipal securities | $ | — |  |  | $ | 20,135 |  |  | $ | 425,876 |  |  | $ | 750,449 |  |  | $ | 1,196,460 |
Agency commercial MBS | — |  |  | 29,273 |  |  | 373,363 |  |  | — |  |  | 402,636 |
Private label commercial MBS | — |  |  | — |  |  | 34,668 |  |  | 294,448 |  |  | 329,116 |
U.S. Treasury securities | — |  |  | — |  |  | 173,283 |  |  | — |  |  | 173,283 |
Corporate debt securities | — |  |  | — |  |  | 9,381 |  |  | 45,818 |  |  | 55,199 |
Total | $ | — |  |  | $ | 49,408 |  |  | $ | 1,016,571 |  |  | $ | 1,090,715 |  |  | $ | 2,156,694 |
Investment Income | The following table presents the composition of our interest income on investment securities for the years indicated:
| Year Ended December 31,
| 2024 |  | 2023 |  | 2022
| (In thousands)
Taxable interest | $ | 114,656 |  |  | $ | 150,710 |  |  | $ | 179,496 |
Non-taxable interest | 18,594 |  |  | 19,479 |  |  | 28,936 |
Dividend income | 7,544 |  |  | 4,807 |  |  | 1,319 |
Total interest income on investment securities | $ | 140,794 |  |  | $ | 174,996 |  |  | $ | 209,751 |

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