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Investment Securities | 6 Months Ended
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Jun. 30, 2024
Investments, Debt and Equity Securities [Abstract] |
Investment Securities | INVESTMENT SECURITIES Securities Available-for-Sale The following table presents amortized cost, gross unrealized gains and losses, and fair values of securities available-for-sale as of the dates indicated:
| June 30, 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 | $ | 1,333,993 |  |  | $ | — |  |  | $ | 1,333,993 |  |  | $ | — |  |  | $ | (232,132) |  |  | $ | 1,101,861 |
Agency commercial MBS | 257,920 |  |  | — |  |  | 257,920 |  |  | — |  |  | (16,577) |  |  | 241,343 |
Agency residential CMOs | 313,088 |  |  | — |  |  | 313,088 |  |  | — |  |  | (34,828) |  |  | 278,260 |
Municipal securities | 34,541 |  |  | — |  |  | 34,541 |  |  | — |  |  | (1,484) |  |  | 33,057 |
Corporate debt securities | 327,471 |  |  | (199) |  |  | 327,272 |  |  | 1,436 |  |  | (46,746) |  |  | 281,962 |
Private label residential CMOs | 187,716 |  |  | — |  |  | 187,716 |  |  | — |  |  | (37,430) |  |  | 150,286 |
Collateralized loan obligations | 109,168 |  |  | — |  |  | 109,168 |  |  | 272 |  |  | (86) |  |  | 109,354 |
Private label commercial MBS | 19,144 |  |  | — |  |  | 19,144 |  |  | — |  |  | (1,068) |  |  | 18,076 |
Asset-backed securities | 17,472 |  |  | — |  |  | 17,472 |  |  | — |  |  | (28) |  |  | 17,444 |
SBA securities | 13,388 |  |  | — |  |  | 13,388 |  |  | — |  |  | (1,000) |  |  | 12,388 |
Total | $ | 2,613,901 |  |  | $ | (199) |  |  | $ | 2,613,702 |  |  | $ | 1,708 |  |  | $ | (371,379) |  |  | $ | 2,244,031 |
| 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 |
U.S. Treasury securities | 4,965 |  |  | — |  |  | 4,965 |  |  | 3 |  |  | — |  |  | 4,968 |
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 |
Total | $ | 2,699,255 |  |  | $ | (199) |  |  | $ | 2,699,056 |  |  | $ | 262 |  |  | $ | (352,454) |  |  | $ | 2,346,864 |
As of June 30, 2024, the Company had recorded an allowance for credit losses on securities available-for-sale of $199,000. We do not currently intend to sell any of the securities in an unrealized loss position and further believe it is more likely than not that we will not be required to sell these securities before their anticipated recovery. As of June 30, 2024, securities available-for-sale with a fair value of $4.6 million were pledged as collateral solely for public deposits. Realized Gains and Losses on Securities Available-for-Sale The were no investment securities sales for the three and six months ended June 30, 2024 and 2023. Unrealized Losses on Securities Available-for-Sale The following tables present the gross unrealized losses and fair values of securities available-for-sale that were in unrealized loss positions as of the dates indicated:
| June 30, 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 | $ | — |  |  | $ | — |  |  | $ | 1,101,862 |  |  | $ | (232,132) |  |  | $ | 1,101,862 |  |  | $ | (232,132) |
Agency commercial MBS | — |  |  | — |  |  | 241,343 |  |  | (16,577) |  |  | 241,343 |  |  | (16,577) |
Agency residential CMOs | — |  |  | — |  |  | 278,260 |  |  | (34,828) |  |  | 278,260 |  |  | (34,828) |
Municipal securities | — |  |  | — |  |  | 33,057 |  |  | (1,484) |  |  | 33,057 |  |  | (1,484) |
Corporate debt securities | — |  |  | — |  |  | 278,895 |  |  | (46,746) |  |  | 278,895 |  |  | (46,746) |
Private label residential CMOs | — |  |  | — |  |  | 150,286 |  |  | (37,430) |  |  | 150,286 |  |  | (37,430) |
Collateralized loan obligations | 20,852 |  |  | (86) |  |  | — |  |  | — |  |  | 20,852 |  |  | (86) |
Private label commercial MBS | — |  |  | — |  |  | 18,076 |  |  | (1,068) |  |  | 18,076 |  |  | (1,068) |
Asset-backed securities | 17,445 |  |  | (28) |  |  | — |  |  | — |  |  | 17,445 |  |  | (28) |
SBA securities | — |  |  | — |  |  | 12,388 |  |  | (1,000) |  |  | 12,388 |  |  | (1,000) |
Total | $ | 38,297 |  |  | $ | (114) |  |  | $ | 2,114,167 |  |  | $ | (371,265) |  |  | $ | 2,152,464 |  |  | $ | (371,379) |
| 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 | — |  |  | — |  |  | 265,431 |  |  | (36,650) |  |  | 265,431 |  |  | (36,650) |
Municipal securities | — |  |  | — |  |  | 284,334 |  |  | (1,109) |  |  | 284,334 |  |  | (1,109) |
Corporate debt securities | — |  |  | — |  |  | 19,952 |  |  | (60,254) |  |  | 19,952 |  |  | (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 | — |  |  | — |  |  | 28,083 |  |  | (1,313) |  |  | 28,083 |  |  | (1,313) |
Asset-backed securities | — |  |  | — |  |  | 20,813 |  |  | (289) |  |  | 20,813 |  |  | (289) |
SBA securities | — |  |  | — |  |  | 13,739 |  |  | (903) |  |  | 13,739 |  |  | (903) |
Total | $ | — |  |  | $ | — |  |  | $ | 2,298,565 |  |  | $ | (352,454) |  |  | $ | 2,298,565 |  |  | $ | (352,454) |
The securities that were in an unrealized loss position at June 30, 2024, were considered impaired and required further review to determine if the unrealized losses were credit-related. We concluded the unrealized losses were a result of the level of market interest rates relative to the types of securities and pricing changes caused by shifting supply and demand dynamics and not a result of downgraded credit ratings or other indicators of deterioration of the underlying issuers' ability to repay. We also considered the seniority of the tranches and U.S. government agency guarantees, if any, to assess whether an unrealized loss was credit-related. Accordingly, we determined the unrealized losses were not credit-related and recognized the unrealized losses in "Accumulated other comprehensive loss, net" of "Stockholders' equity" on the condensed consolidated balance sheets. Although we periodically sell securities for portfolio management purposes, we do not foresee having to sell any impaired securities and believe that it is more likely than not we would not be required to sell any impaired securities before recovery of their amortized cost. Contractual Maturities of Securities Available-for-Sale The following tables present the contractual maturities of our securities available-for-sale portfolio based on amortized cost and fair value as of the date indicated:
| June 30, 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 | $ | — |  |  | $ | — |  |  | $ | 707 |  |  | $ | 1,333,286 |  |  | $ | 1,333,993 |
Agency commercial MBS | — |  |  | 234,514 |  |  | 6,129 |  |  | 17,277 |  |  | 257,920 |
Agency residential CMOs | — |  |  | 51,213 |  |  | — |  |  | 261,875 |  |  | 313,088 |
Municipal securities | — |  |  | 16,876 |  |  | 17,665 |  |  | — |  |  | 34,541 |
Corporate debt securities | — |  |  | 5,000 |  |  | 322,471 |  |  | — |  |  | 327,471 |
Private label residential CMOs | — |  |  | — |  |  | — |  |  | 187,716 |  |  | 187,716 |
Collateralized loan obligations | — |  |  | — |  |  | 109,168 |  |  | — |  |  | 109,168 |
Private label commercial MBS | — |  |  | — |  |  | 1,170 |  |  | 17,974 |  |  | 19,144 |
Asset-backed securities | — |  |  | — |  |  | — |  |  | 17,472 |  |  | 17,472 |
SBA securities | — |  |  | 2,430 |  |  | 4,180 |  |  | 6,778 |  |  | 13,388 |
Total | $ | — |  |  | $ | 310,033 |  |  | $ | 461,490 |  |  | $ | 1,842,378 |  |  | $ | 2,613,901 |
| June 30, 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 | $ | — |  |  | $ | — |  |  | $ | 677 |  |  | $ | 1,101,184 |  |  | $ | 1,101,861 |
Agency commercial MBS | — |  |  | 219,484 |  |  | 5,653 |  |  | 16,206 |  |  | 241,343 |
Agency residential CMOs | — |  |  | 47,541 |  |  | — |  |  | 230,719 |  |  | 278,260 |
Municipal securities | — |  |  | 16,445 |  |  | 16,612 |  |  | — |  |  | 33,057 |
Corporate debt securities | — |  |  | 4,830 |  |  | 277,132 |  |  | — |  |  | 281,962 |
Private label residential CMOs | — |  |  | — |  |  | — |  |  | 150,286 |  |  | 150,286 |
Collateralized loan obligations | — |  |  | — |  |  | 109,354 |  |  | — |  |  | 109,354 |
Private label commercial MBS | — |  |  | — |  |  | 1,132 |  |  | 16,944 |  |  | 18,076 |
Asset-backed securities | — |  |  | — |  |  | — |  |  | 17,444 |  |  | 17,444 |
SBA securities | — |  |  | 2,314 |  |  | 3,869 |  |  | 6,205 |  |  | 12,388 |
Total | $ | — |  |  | $ | 290,614 |  |  | $ | 414,429 |  |  | $ | 1,538,988 |  |  | $ | 2,244,031 |
CMBS, CMOs, and MBS have contractual maturity dates, but require periodic payments based upon scheduled amortization terms. Actual principal collections on these securities usually occur more rapidly than the scheduled amortization terms because of prepayments made by obligors of the underlying loan collateral. Securities Held-to-Maturity Effective June 1, 2022, the Company transferred securities with a fair value of $2.3 billion from available-for-sale to held-to-maturity. At the time of transfer, $218.3 million of unrealized losses, net of tax, was retained in "Accumulated other comprehensive loss, net" on the condensed consolidated balance sheets. The amount remaining in "Accumulated other comprehensive loss, net" at June 30, 2024, was $169.8 million. The following table presents amortized cost, allowance for credit losses, gross unrealized gains and losses, and fair values of securities held-to-maturity as of the date indicated:
| June 30, 2024
|  |  | Allowance |  |  |  |  |  |  |  |
|  |  | for |  | Net |  | Gross |  | Gross |  |
| Amortized |  | Credit |  | Carrying |  | Unrealized |  | Unrealized |  | Fair
Security Type | Cost |  | Losses |  | Amount |  | Gains |  | Losses |  | Value
| (In thousands)
Municipal securities | $ | 1,249,421 |  |  | $ | (140) |  |  | $ | 1,249,281 |  |  | $ | 46 |  |  | $ | (51,317) |  |  | $ | 1,198,010 |
Agency commercial MBS | 437,110 |  |  | — |  |  | 437,110 |  |  | — |  |  | (36,391) |  |  | 400,719 |
Private label commercial MBS | 352,880 |  |  | — |  |  | 352,880 |  |  | — |  |  | (30,053) |  |  | 322,827 |
U.S. Treasury securities | 188,495 |  |  | — |  |  | 188,495 |  |  | — |  |  | (16,566) |  |  | 171,929 |
Corporate debt securities | 70,302 |  |  | (1,360) |  |  | 68,942 |  |  | — |  |  | (16,498) |  |  | 52,444 |
Total (1) | $ | 2,298,208 |  |  | $ | (1,500) |  |  | $ | 2,296,708 |  |  | $ | 46 |  |  | $ | (150,825) |  |  | $ | 2,145,929 |
__________________________ (1) Excludes accrued interest receivable of $13.4 million at June 30, 2024 which is recorded in "Other assets" on the condensed 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 condensed consolidated balance sheets. As of June 30, 2024, securities held-to-maturity with an amortized cost of $2.2 billion and a fair value of $2.1 billion were pledged as collateral primarily for the FRB secured line of credit, Bank Term Funding Program borrowings, and public deposits. Allowance for Credit Losses on Securities Held-to-Maturity The following table presents the changes by major security type in our allowance for credit losses on securities held-to-maturity for the periods indicated:
| 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)
Three Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |
Municipal securities | $ | 140 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 140 |
Corporate debt securities | 1,360 |  |  | — |  |  | — |  |  | — |  |  | 1,360 |
Total | $ | 1,500 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1,500 |
Six Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |
Municipal securities | $ | 140 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 140 |
Corporate debt securities | 1,360 |  |  | — |  |  | — |  |  | — |  |  | 1,360 |
Total | $ | 1,500 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1,500 |
| 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)
Three Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |
Municipal securities | $ | 140 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 140 |
Corporate debt securities | 1,360 |  |  | — |  |  | — |  |  | — |  |  | 1,360 |
Total | $ | 1,500 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1,500 |
Six Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |
Municipal securities | $ | 140 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 140 |
Corporate debt securities | 1,360 |  |  | — |  |  | — |  |  | — |  |  | 1,360 |
Total | $ | 1,500 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1,500 |
Credit losses on HTM securities are recorded at the time of purchase, acquisition, or when the Company designates securities as held-to-maturity. Credit losses on HTM securities are representative of current expected credit losses that may be incurred over the life of the investment. Accrued interest receivable on HTM securities, which is included in other assets on the condensed consolidated balance sheets, is excluded from the estimate of expected credit losses. HTM U.S. treasury securities and agency-backed MBS securities are considered to have no risk of loss as they are either explicitly or implicitly guaranteed by the U.S. government. The change in fair value in the HTM private label CMBS portfolio is solely driven by changes in interest rates. The Company has no knowledge of any underlying credit issues and the cash flows underlying the debt securities have not changed and are not expected to be impacted by changes in interest rates and, thus, there is no related ACL for this portfolio. The underlying bonds in the Company’s HTM municipal securities and HTM corporate debt securities portfolios are evaluated for credit losses in conjunction with management’s estimate of the allowance for credit losses based primarily on credit ratings. Securities Held-to-Maturity by Credit Quality Indicator The Company uses S&P, Moody's, Fitch, Kroll, and Egan Jones ratings as the credit quality indicators for its held-to-maturity securities. The following table presents our securities held-to-maturity portfolio at amortized cost by the lowest available credit rating as of the dates indicated:
| June 30, 2024
Security Type | AAA |  | AA+ |  | AA |  | AA- |  | A+ |  | A |  | A- |  | BBB |  | NR |  | Total
| (In thousands)
Amortized Cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Municipal securities | $ | 564,410 |  |  | $ | 399,743 |  |  | $ | 193,049 |  |  | $ | 60,722 |  |  | $ | 11,996 |  |  | $ | 1,779 |  |  | $ | — |  |  | $ | — |  |  | $ | 17,722 |  |  | $ | 1,249,421 |
Agency commercial |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
MBS | — |  |  | 437,110 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 437,110 |
Private label |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
commercial MBS | 352,880 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 352,880 |
U.S. Treasury |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
securities | — |  |  | 188,495 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 188,495 |
Corporate debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
securities | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 44,438 |  |  | 25,864 |  |  | 70,302 |
Total | $ | 917,290 |  |  | $ | 1,025,348 |  |  | $ | 193,049 |  |  | $ | 60,722 |  |  | $ | 11,996 |  |  | $ | 1,779 |  |  | $ | — |  |  | $ | 44,438 |  |  | $ | 43,586 |  |  | $ | 2,298,208 |
| December 31, 2023
Security Type | AAA |  | AA+ |  | AA |  | AA- |  | A+ |  | A |  | A- |  | BBB |  | NR |  | Total
| (In thousands)
Amortized Cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Municipal securities | $ | 564,127 |  |  | $ | 397,542 |  |  | $ | 167,905 |  |  | $ | 86,243 |  |  | $ | 12,007 |  |  | $ | 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 |  |  | $ | 12,007 |  |  | $ | 1,787 |  |  | $ | — |  |  | $ | 44,371 |  |  | $ | 43,456 |  |  | $ | 2,288,791 |
Contractual Maturities of Securities Held-to-Maturity The following tables present the contractual maturities of our securities held-to-maturity portfolio based on amortized cost and fair value as of the date indicated:
| June 30, 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 | $ | — |  |  | $ | 17,722 |  |  | $ | 407,453 |  |  | $ | 824,246 |  |  | $ | 1,249,421 |
Agency commercial MBS | — |  |  | — |  |  | 437,110 |  |  | — |  |  | 437,110 |
Private label commercial MBS | — |  |  | — |  |  | 36,623 |  |  | 316,257 |  |  | 352,880 |
U.S. Treasury securities | — |  |  | — |  |  | 188,495 |  |  | — |  |  | 188,495 |
Corporate debt securities | — |  |  | — |  |  | 10,172 |  |  | 60,130 |  |  | 70,302 |
Total | $ | — |  |  | $ | 17,722 |  |  | $ | 1,079,853 |  |  | $ | 1,200,633 |  |  | $ | 2,298,208 |
| June 30, 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 | $ | — |  |  | $ | 17,621 |  |  | $ | 384,920 |  |  | $ | 795,469 |  |  | $ | 1,198,010 |
Agency commercial MBS | — |  |  | — |  |  | 400,719 |  |  | — |  |  | 400,719 |
Private label commercial MBS | — |  |  | — |  |  | 34,041 |  |  | 288,786 |  |  | 322,827 |
U.S. Treasury securities | — |  |  | — |  |  | 171,929 |  |  | — |  |  | 171,929 |
Corporate debt securities | — |  |  | — |  |  | 9,708 |  |  | 42,736 |  |  | 52,444 |
Total | $ | — |  |  | $ | 17,621 |  |  | $ | 1,001,317 |  |  | $ | 1,126,991 |  |  | $ | 2,145,929 |
Commercial MBS have contractual maturity dates, but require periodic payments based upon scheduled amortization terms. Actual principal collections on these securities usually occur more rapidly than the scheduled amortization terms because of prepayments made by obligors of the underlying loan collateral. Interest Income on Investment Securities The following table presents the composition of our interest income on investment securities, including available-for-sale and held-to-maturity, for the periods indicated:
| Three Months Ended |  | Six Months Ended
| June 30, |  | June 30,
| 2024 |  | 2023 |  | 2024 |  | 2023
| (In thousands)
Taxable interest | $ | 27,064 |  |  | $ | 38,207 |  |  | $ | 54,665 |  |  | $ | 76,899 |
Non-taxable interest | 4,746 |  |  | 4,922 |  |  | 9,466 |  |  | 9,825 |
Dividend income | 2,026 |  |  | 1,024 |  |  | 4,008 |  |  | 1,666 |
Total interest income on investment securities | $ | 33,836 |  |  | $ | 44,153 |  |  | $ | 68,139 |  |  | $ | 88,390 |

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