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Securities (Tables) | 9 Months Ended
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Sep. 30, 2024
Notes Tables |
Schedule of portfolio of securities | The following table summarizes the Company’s portfolio of securities held-to-maturity on September 30, 2024: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross
​ | ​ | Amortized | ​ | ​ | ​ | ​ | Unrecognized | ​ | Unrecognized
​ |  | Cost |  | Fair Value |  | Gains | ​ | Losses
​ | ​ | (In thousands)
Municipals | ​ | $ | 64,945 | ​ | $ | 56,709 | ​ | $ | — | ​ | $ | (8,236)
Total municipals | ​ |  | 64,945 | ​ |  | 56,709 | ​ |  | — | ​ |  | (8,236)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
FNMA | ​ |  | 7,841 | ​ |  | 7,243 | ​ |  | — | ​ |  | (598)
Total mortgage-backed securities | ​ |  | 7,841 | ​ |  | 7,243 | ​ |  | — | ​ |  | (598)
Total before allowance for credit losses | ​ | ​ | 72,786 | ​ | $ | 63,952 | ​ | $ | — | ​ | $ | (8,834)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Allowance for credit losses | ​ | ​ | (1,086) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total | ​ | $ | 71,700 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ The following table summarizes the Company’s portfolio of securities held-to-maturity on December 31, 2023: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross
​ | ​ | Amortized | ​ | ​ | ​ | ​ | Unrecognized | ​ | Unrecognized
​ |  | Cost |  | Fair Value |  | Gains | ​ | Losses
​ | ​ | (In thousands)
Municipals | ​ | $ | 66,155 | ​ | $ | 58,697 | ​ | $ | — | ​ | $ | (7,458)
Total municipals | ​ |  | 66,155 | ​ |  | 58,697 | ​ |  | — | ​ |  | (7,458)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
FNMA | ​ |  | 7,855 | ​ |  | 7,058 | ​ |  | — | ​ |  | (797)
Total mortgage-backed securities | ​ |  | 7,855 | ​ |  | 7,058 | ​ |  | — | ​ |  | (797)
Total before allowance for credit losses | ​ | ​ | 74,010 | ​ | $ | 65,755 | ​ | $ | — | ​ | $ | (8,255)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Allowance for credit losses | ​ | ​ | (1,087) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total | ​ | $ | 72,923 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ ​ The following table summarizes the Company’s portfolio of securities available for sale on September 30, 2024: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross
​ | ​ | Amortized | ​ | ​ | ​ | ​ | Unrealized | ​ | Unrealized
​ |  | Cost |  | Fair Value |  | Gains |  | Losses
​ | ​ | (In thousands)
U.S. government agencies | ​ | $ | 30,016 | ​ | $ | 29,856 | ​ | $ | 106 | ​ | $ | (266)
Corporate | ​ | ​ | 183,281 | ​ | ​ | 169,555 | ​ | ​ | 407 | ​ | ​ | (14,133)
Mutual funds | ​ |  | 12,168 | ​ |  | 12,168 | ​ |  | — | ​ |  | —
Collateralized loan obligations | ​ |  | 473,762 | ​ |  | 474,500 | ​ |  | 1,663 | ​ |  | (925)
Other | ​ |  | 1,439 | ​ |  | 1,439 | ​ |  | — | ​ |  | —
Total other securities | ​ |  | 700,666 | ​ |  | 687,518 | ​ |  | 2,176 | ​ |  | (15,324)
REMIC and CMO | ​ |  | 723,583 | ​ |  | 704,494 | ​ |  | 4,055 | ​ |  | (23,144)
GNMA | ​ |  | 23,686 | ​ |  | 22,254 | ​ |  | 85 | ​ |  | (1,517)
FNMA | ​ |  | 145,547 | ​ |  | 128,047 | ​ |  | 41 | ​ |  | (17,541)
FHLMC | ​ |  | 84,461 | ​ |  | 71,936 | ​ |  | — | ​ |  | (12,525)
Total mortgage-backed securities | ​ |  | 977,277 | ​ |  | 926,731 | ​ |  | 4,181 | ​ |  | (54,727)
Total Securities excluding portfolio layer adjustments | ​ | ​ | 1,677,943 | ​ | ​ | 1,614,249 | ​ | ​ | 6,357 | ​ | ​ | (70,051)
Unallocated portfolio layer basis adjustments (1) | ​ | ​ | (89) | ​ | ​ | n/a | ​ | ​ | — | ​ | ​ | 89
Total securities available for sale | ​ | $ | 1,677,854 | ​ | $ | 1,614,249 | ​ | $ | 6,357 | ​ | $ | (69,962)
(1) Represents the amount of portfolio layer method basis adjustments related to available for sale (“AFS”) securities hedged in a closed portfolio. Under GAAP portfolio layer method basis adjustments are not allocated to individual securities, however, the amounts impact the unrealized gains or losses for the individual securities being hedged. See Note 11 (“Derivative Financial Instruments”) of the Notes to the Consolidated Financial Statements. ​ The following table summarizes the Company’s portfolio of securities available for sale on December 31, 2023: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross
​ | ​ | Amortized | ​ | ​ | ​ | ​ | Unrealized | ​ | Unrealized
​ |  | Cost |  | Fair Value |  | Gains |  | Losses
​ | ​ | (In thousands)
U.S. government agencies | ​ | $ | 82,548 | ​ | $ | 81,734 | ​ | $ | 123 | ​ | $ | (937)
Corporate | ​ | ​ | 173,184 | ​ | ​ | 155,449 | ​ | ​ | — | ​ | ​ | (17,735)
Mutual funds | ​ |  | 11,660 | ​ |  | 11,660 | ​ |  | — | ​ |  | —
Collateralized loan obligations | ​ |  | 269,600 | ​ |  | 270,129 | ​ |  | 1,215 | ​ |  | (686)
Other | ​ |  | 1,437 | ​ |  | 1,437 | ​ |  | — | ​ |  | —
Total other securities | ​ |  | 538,429 | ​ |  | 520,409 | ​ |  | 1,338 | ​ |  | (19,358)
REMIC and CMO | ​ |  | 160,165 | ​ |  | 133,574 | ​ |  | — | ​ |  | (26,591)
GNMA | ​ |  | 12,402 | ​ |  | 10,665 | ​ |  | 3 | ​ |  | (1,740)
FNMA | ​ |  | 155,995 | ​ |  | 135,074 | ​ |  | 14 | ​ |  | (20,935)
FHLMC | ​ |  | 89,427 | ​ |  | 75,031 | ​ |  | — | ​ |  | (14,396)
Total mortgage-backed securities | ​ |  | 417,989 | ​ |  | 354,344 | ​ |  | 17 | ​ |  | (63,662)
Total Securities excluding portfolio layer adjustments | ​ | ​ | 956,418 | ​ | ​ | 874,753 | ​ | ​ | 1,355 | ​ | ​ | (83,020)
Unallocated portfolio layer basis adjustments (1) | ​ | ​ | (2,254) | ​ | ​ | n/a | ​ | ​ | — | ​ | ​ | 2,254
Total securities available for sale | ​ | $ | 954,164 | ​ | $ | 874,753 | ​ | $ | 1,355 | ​ | $ | (80,766)
(1) Represents the amount of portfolio layer method basis adjustments related to AFS securities hedged in a closed portfolio. Under GAAP portfolio layer method basis adjustments are not allocated to individual securities, however, the amounts impact the unrealized gains or losses for the individual securities being hedged. See Note 11 (“Derivative Financial Instruments”) of the Notes to the Consolidated Financial Statements.
Schedule of amortized cost and fair value of the Company's securities classified as held-to-maturity and available for sale | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Amortized | ​ | ​ | ​
Securities held-to-maturity: |  | Cost |  | Fair Value
​ |  | (In thousands)
Due after ten years | ​ | $ | 64,945 | ​ | $ | 56,709
Total other securities | ​ | ​ | 64,945 | ​ | ​ | 56,709
Mortgage-backed securities | ​ | ​ | 7,841 | ​ | ​ | 7,243
Total before allowance for credit losses | ​ | ​ | 72,786 | ​ | $ | 63,952
​ | ​ | ​ | ​ | ​ | ​ | ​
Allowance for credit losses | ​ | ​ | (1,086) | ​ | ​ | ​
Total |  | $ | 71,700 |  | ​ | ​
​ ​ ​ ​ ​ ​ ​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Amortized | ​ | ​ | ​
Securities available for sale: |  | Cost |  | Fair Value
​ | ​ | (In thousands)
Due in one year or less |  | $ | 29,953 |  | $ | 29,635
Due after one year through five years | ​ | ​ | 75,191 | ​ | ​ | 71,066
Due after five years through ten years | ​ | ​ | 207,758 | ​ |  | 198,713
Due after ten years | ​ | ​ | 375,596 | ​ | ​ | 375,936
Total other securities | ​ |  | 688,498 | ​ |  | 675,350
Mutual funds | ​ |  | 12,168 | ​ |  | 12,168
Mortgage-backed securities | ​ |  | 977,277 | ​ |  | 926,731
Total securities available for sale (1) | ​ | $ | 1,677,943 | ​ | $ | 1,614,249
(1) The table above excludes the unallocated portfolio layer basis adjustments totaling $0.1 million related to AFS securities hedged in a closed portfolio at September 30, 2024. See Note 11 (“Derivative Financial Instruments”) of the Notes to the Consolidated Financial Statements.
Schedule of securities with gross unrealized losses and their fair value | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | At September 30, 2024
​ | ​ | ​ | ​ | Total | ​ | Less than 12 months | ​ | 12 months or more
​ | ​ | ​ | ​ | ​ | ​ | ​ | Unrealized | ​ | ​ | ​ | ​ | Unrealized | ​ | ​ | ​ | ​ | Unrealized
​ |  | Count |  | Fair Value |  | Losses |  | Fair Value |  | Losses |  | Fair Value |  | Losses
​ | ​ | (Dollars in thousands)
Held-to-maturity securities |  |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Municipals |  | 3 | ​ | $ | 56,709 | ​ | $ | (8,236) | ​ | $ | — | ​ | $ | — | ​ | $ | 56,709 | ​ | $ | (8,236)
Total other securities |  | 3 | ​ |  | 56,709 | ​ |  | (8,236) | ​ |  | — | ​ |  | — | ​ |  | 56,709 | ​ |  | (8,236)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
FNMA |  | 1 | ​ |  | 7,243 | ​ |  | (598) | ​ |  | — | ​ |  | — | ​ |  | 7,243 | ​ |  | (598)
Total mortgage-backed securities |  | 1 | ​ |  | 7,243 | ​ |  | (598) | ​ |  | — | ​ |  | — | ​ |  | 7,243 | ​ |  | (598)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total |  | 4 | ​ | $ | 63,952 | ​ | $ | (8,834) | ​ | $ | — | ​ | $ | — | ​ | $ | 63,952 | ​ | $ | (8,834)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Available for sale securities (1) |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
U.S. Government Agencies |  | 5 | ​ | $ | 24,297 | ​ | $ | (266) | ​ | $ | — | ​ | $ | — | ​ | $ | 24,297 | ​ | $ | (266)
Corporate |  | 24 | ​ |  | 148,377 | ​ |  | (14,133) | ​ |  | 3,466 | ​ |  | (23) | ​ |  | 144,911 | ​ |  | (14,110)
Collateralized loan obligations |  | 22 | ​ |  | 249,222 | ​ |  | (925) | ​ |  | 249,222 | ​ |  | (925) | ​ |  | — | ​ |  | —
Total other securities |  | 51 | ​ |  | 421,896 | ​ |  | (15,324) | ​ |  | 252,688 | ​ |  | (948) | ​ |  | 169,208 | ​ |  | (14,376)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
REMIC and CMO |  | 48 | ​ |  | 155,212 | ​ |  | (23,144) | ​ |  | 28,389 | ​ |  | (43) | ​ |  | 126,823 | ​ |  | (23,101)
GNMA |  | 6 | ​ |  | 10,188 | ​ |  | (1,517) | ​ |  | 3,843 | ​ |  | (10) | ​ |  | 6,345 | ​ |  | (1,507)
FNMA |  | 42 | ​ |  | 125,290 | ​ |  | (17,541) | ​ |  | — | ​ |  | — | ​ |  | 125,290 | ​ |  | (17,541)
FHLMC |  | 18 | ​ |  | 71,936 | ​ |  | (12,525) | ​ |  | — | ​ |  | — | ​ |  | 71,936 | ​ |  | (12,525)
Total mortgage-backed securities |  | 114 | ​ |  | 362,626 | ​ |  | (54,727) | ​ |  | 32,232 | ​ |  | (53) | ​ |  | 330,394 | ​ |  | (54,674)
Total |  | 165 | ​ | $ | 784,522 | ​ | $ | (70,051) | ​ | $ | 284,920 | ​ | $ | (1,001) | ​ | $ | 499,602 | ​ | $ | (69,050)
(1) The table above excludes the unallocated portfolio layer basis adjustments totaling $0.1 million related to AFS securities hedged in a closed portfolio at September 30, 2024. See Note 11 (“Derivative Financial Instruments”) of the Notes to the Consolidated Financial Statements. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | At December 31, 2023
​ | ​ | ​ | ​ | Total | ​ | Less than 12 months | ​ | 12 months or more
​ | ​ | ​ | ​ | ​ | ​ | ​ | Unrealized | ​ | ​ | ​ | ​ | Unrealized | ​ | ​ | ​ | ​ | Unrealized
​ |  | Count |  | Fair Value |  | Losses |  | Fair Value |  | Losses |  | Fair Value |  | Losses
​ | ​ | (Dollars in thousands)
Held-to-maturity securities |  |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Municipals |  | 3 | ​ | $ | 58,697 | ​ | $ | (7,458) | ​ | $ | — | ​ | $ | — | ​ | $ | 58,697 | ​ | $ | (7,458)
Total other securities |  | 3 | ​ |  | 58,697 | ​ |  | (7,458) | ​ |  | — | ​ |  | — | ​ |  | 58,697 | ​ |  | (7,458)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
FNMA |  | 1 | ​ |  | 7,058 | ​ |  | (797) | ​ |  | — | ​ |  | — | ​ |  | 7,058 | ​ |  | (797)
Total mortgage-backed securities |  | 1 | ​ |  | 7,058 | ​ |  | (797) | ​ |  | — | ​ |  | — | ​ |  | 7,058 | ​ |  | (797)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total |  | 4 | ​ | $ | 65,755 | ​ | $ | (8,255) | ​ | $ | — | ​ | $ | — | ​ | $ | 65,755 | ​ | $ | (8,255)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Available for sale securities (1) |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
U.S. government agencies |  | 8 | ​ | $ | 74,517 | ​ | $ | (937) | ​ | $ | 2,517 | ​ | $ | (7) | ​ | $ | 72,000 | ​ | $ | (930)
Corporate |  | 26 | ​ |  | 155,449 | ​ |  | (17,735) | ​ |  | 25,428 | ​ |  | (1,318) | ​ |  | 130,021 | ​ |  | (16,417)
Collateralized loan obligations |  | 17 | ​ |  | 120,609 | ​ |  | (686) | ​ |  | — | ​ |  | — | ​ |  | 120,609 | ​ |  | (686)
Total other securities |  | 51 | ​ |  | 350,575 | ​ |  | (19,358) | ​ |  | 27,945 | ​ |  | (1,325) | ​ |  | 322,630 | ​ |  | (18,033)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
REMIC and CMO |  | 46 | ​ |  | 133,312 | ​ |  | (26,591) | ​ |  | — | ​ |  | — | ​ |  | 133,312 | ​ |  | (26,591)
GNMA |  | 7 | ​ |  | 10,466 | ​ |  | (1,740) | ​ |  | 3,867 | ​ |  | (34) | ​ |  | 6,599 | ​ |  | (1,706)
FNMA |  | 44 | ​ |  | 133,394 | ​ |  | (20,935) | ​ |  | 2,044 | ​ |  | (1) | ​ |  | 131,350 | ​ |  | (20,934)
FHLMC |  | 18 | ​ |  | 75,031 | ​ |  | (14,396) | ​ |  | — | ​ |  | — | ​ |  | 75,031 | ​ |  | (14,396)
Total mortgage-backed securities |  | 115 | ​ |  | 352,203 | ​ |  | (63,662) | ​ |  | 5,911 | ​ |  | (35) | ​ |  | 346,292 | ​ |  | (63,627)
Total |  | 166 | ​ | $ | 702,778 | ​ | $ | (83,020) | ​ | $ | 33,856 | ​ | $ | (1,360) | ​ | $ | 668,922 | ​ | $ | (81,660)
(1) The table above excludes the unallocated portfolio layer basis adjustments totaling $2.3 million related to AFS securities hedged in a closed portfolio at December 31, 2023. See Note 11 (“Derivative Financial Instruments”) of the Notes to the Consolidated Financial Statements.
Schedule of allowance for credit losses for debt securities held-to-maturity | The following table presents the activity in the allowance for credit losses for debt securities held-to-maturity.
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | For the three months ended | ​ | For the nine months ended
​ | September 30, | ​ | September 30,
​ | 2024 | ​ | 2023 | ​ | 2024 | ​ | 2023
​ | ​ | (In thousands)
Beginning balance | $ | 1,089 | ​ | $ | 1,079 | ​ | $ | 1,087 | ​ | $ | 1,100
Provision (benefit) |  | (3) | ​ |  | 3 | ​ | ​ | (1) | ​ |  | (18)
Allowance for credit losses | $ | 1,086 | ​ | $ | 1,082 | ​ | $ | 1,086 | ​ | $ | 1,082

X
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