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Securities | 12 Months Ended
--- | ---
Dec. 31, 2023
Notes to Financial Statements |
Securities | 6. Securities The following table summarizes the Company’s portfolio of securities held-to-maturity at 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 held-to-maturity at December 31, 2022: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross
​ | ​ | Amortized | ​ | ​ | ​ | ​ | Unrecognized | ​ | Unrecognized
​ |  | Cost |  | Fair Value |  | Gains | ​ | Losses
​ | ​ | (In thousands)
Municipals | ​ | $ | 66,936 | ​ | $ | 55,561 | ​ | $ | — | ​ | $ | (11,375)
Total municipals | ​ |  | 66,936 | ​ |  | 55,561 | ​ |  | — | ​ |  | (11,375)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
FNMA | ​ |  | 7,875 | ​ |  | 6,989 | ​ |  | — | ​ |  | (886)
Total mortgage-backed securities | ​ |  | 7,875 | ​ |  | 6,989 | ​ |  | — | ​ |  | (886)
Total before allowance for credit losses | ​ | ​ | 74,811 | ​ | $ | 62,550 | ​ | $ | — | ​ | $ | (12,261)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Allowance for credit losses | ​ | ​ | (1,100) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total | ​ | $ | 73,711 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ The following table summarizes the Company’s portfolio of securities available for sale at 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 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 20 (“Derivative Financial Instruments”) of the Notes to the Consolidated Financial Statements. ​ The following table summarizes the Company’s portfolio of securities available for sale at December 31, 2022: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross
​ | ​ | Amortized | ​ | ​ | ​ | ​ | Unrealized | ​ | Unrealized
​ |  | Cost |  | Fair Value |  | Gains |  | Losses
​ | ​ | (In thousands)
U.S. government agencies | ​ | $ | 83,720 | ​ | $ | 81,103 | ​ | $ | 2 | ​ | $ | (2,619)
Corporate | ​ | ​ | 146,430 | ​ | ​ | 131,766 | ​ | ​ | — | ​ | ​ | (14,664)
Mutual funds | ​ |  | 11,211 | ​ |  | 11,211 | ​ |  | — | ​ |  | —
Collateralized loan obligations | ​ |  | 129,684 | ​ |  | 125,478 | ​ |  | — | ​ |  | (4,206)
Other | ​ |  | 1,516 | ​ |  | 1,516 | ​ |  | — | ​ |  | —
Total other securities | ​ |  | 372,561 | ​ |  | 351,074 | ​ |  | 2 | ​ |  | (21,489)
REMIC and CMO | ​ |  | 175,712 | ​ |  | 148,414 | ​ |  | — | ​ |  | (27,298)
GNMA | ​ |  | 9,193 | ​ |  | 7,317 | ​ |  | 3 | ​ |  | (1,879)
FNMA | ​ |  | 172,690 | ​ |  | 148,265 | ​ |  | — | ​ |  | (24,425)
FHLMC | ​ |  | 96,725 | ​ |  | 80,287 | ​ |  | — | ​ |  | (16,438)
Total mortgage-backed securities | ​ |  | 454,320 | ​ |  | 384,283 | ​ |  | 3 | ​ |  | (70,040)
Total securities available for sale | ​ | $ | 826,881 | ​ | $ | 735,357 | ​ | $ | 5 | ​ | $ | (91,529)
​ ​ The corporate securities held by the Company at December 31, 2023 and 2022 are issued by U.S. banking institutions. The CMOs held by the Company at December 31, 2023 and 2022 are either fully guaranteed or issued by a government sponsored enterprise. ​ The following tables detail the amortized cost and fair value of the Company’s securities classified as held-to-maturity and available for sale at December 31, 2023, by contractual maturity. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Amortized | ​ | ​ | ​
Securities held-to-maturity: |  | Cost |  | Fair Value
​ |  | (In thousands)
Due after ten years | ​ | $ | 66,155 | ​ | $ | 58,697
Total other securities | ​ | ​ | 66,155 | ​ | ​ | 58,697
Mortgage-backed securities | ​ | ​ | 7,855 | ​ | ​ | 7,058
​ | ​ | ​ | 74,010 | ​ | ​ | 65,755
​ | ​ | ​ | ​ | ​ | ​ | ​
Allowance for credit losses | ​ | ​ | (1,087) | ​ | ​ | n/a
Total securities held-to-maturity |  | $ | 72,923 |  | $ | 65,755
​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Amortized | ​ | ​ | ​
Securities available for sale: |  | Cost |  | Fair Value
​ | ​ | (In thousands)
Due in one year or less |  | $ | 59,979 |  | $ | 59,485
Due after one year through five years | ​ | ​ | 105,056 | ​ | ​ | 99,599
Due after five years through ten years | ​ | ​ | 222,684 | ​ |  | 209,728
Due after ten years | ​ | ​ | 139,050 | ​ | ​ | 139,937
Total other securities | ​ |  | 526,769 | ​ |  | 508,749
Mutual funds | ​ |  | 11,660 | ​ |  | 11,660
Mortgage-backed securities | ​ |  | 417,989 | ​ |  | 354,344
Total securities available for sale (1) | ​ | $ | 956,418 | ​ | $ | 874,753
​ (1) The table above excludes the unallocated portfolio layer basis adjustments totaling $2.3 million related to AFS securities hedged in a closed pool at December 31, 2023. See Note 20 (“Derivative Financial Instruments”) of the Notes to the Consolidated Financial Statements. ​ The following tables show the Company’s securities with gross unrealized losses and their fair value, aggregated by category and length of time that individual securities have been in a continuous unrealized loss position: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 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)
CLO |  | 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 pool at December 31, 2023. See Note 20 (“Derivative Financial Instruments”) of the Notes to the Consolidated Financial Statements. ​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | At December 31, 2022
​ | ​ | ​ | ​ | 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 | ​ | $ | 55,561 | ​ | $ | (11,375) | ​ | $ | 55,561 | ​ | $ | (11,375) | ​ | $ | — | ​ | $ | —
Total other securities |  | 3 | ​ |  | 55,561 | ​ |  | (11,375) | ​ |  | 55,561 | ​ |  | (11,375) | ​ |  | — | ​ |  | —
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
FNMA |  | 1 | ​ |  | 6,989 | ​ |  | (886) | ​ |  | 6,989 | ​ |  | (886) | ​ |  | — | ​ |  | —
Total mortgage-backed securities |  | 1 | ​ |  | 6,989 | ​ |  | (886) | ​ |  | 6,989 | ​ |  | (886) | ​ |  | — | ​ |  | —
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total |  | 4 | ​ | $ | 62,550 | ​ | $ | (12,261) | ​ | $ | 62,550 | ​ | $ | (12,261) | ​ | $ | — | ​ | $ | —
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Available for sale securities |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
U.S. government agencies |  | 7 | ​ | $ | 77,856 | ​ | $ | (2,619) | ​ | $ | 77,059 | ​ | $ | (2,517) | ​ | $ | 797 | ​ | $ | (102)
Corporate |  | 20 | ​ |  | 131,766 | ​ |  | (14,664) | ​ |  | 45,447 | ​ |  | (3,553) | ​ |  | 86,319 | ​ |  | (11,111)
CLO |  | 19 | ​ |  | 125,478 | ​ |  | (4,206) | ​ |  | 95,518 | ​ |  | (2,916) | ​ |  | 29,960 | ​ |  | (1,290)
Total other securities |  | 46 | ​ |  | 335,100 | ​ |  | (21,489) | ​ |  | 218,024 | ​ |  | (8,986) | ​ |  | 117,076 | ​ |  | (12,503)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
REMIC and CMO |  | 47 | ​ |  | 148,120 | ​ |  | (27,298) | ​ |  | 40,911 | ​ |  | (3,457) | ​ |  | 107,209 | ​ |  | (23,841)
GNMA |  | 8 | ​ |  | 7,133 | ​ |  | (1,879) | ​ |  | 64 | ​ |  | — | ​ |  | 7,069 | ​ |  | (1,879)
FNMA |  | 47 | ​ |  | 148,229 | ​ |  | (24,425) | ​ |  | 38,296 | ​ |  | (3,871) | ​ |  | 109,933 | ​ |  | (20,554)
FHLMC |  | 18 | ​ |  | 80,287 | ​ |  | (16,438) | ​ |  | 24,838 | ​ |  | (2,397) | ​ |  | 55,449 | ​ |  | (14,041)
Total mortgage-backed securities |  | 120 | ​ |  | 383,769 | ​ |  | (70,040) | ​ |  | 104,109 | ​ |  | (9,725) | ​ |  | 279,660 | ​ |  | (60,315)
Total |  | 166 | ​ | $ | 718,869 | ​ | $ | (91,529) | ​ | $ | 322,133 | ​ | $ | (18,711) | ​ | $ | 396,736 | ​ | $ | (72,818)
​ ​ The Company reviewed each available for sale debt security that had an unrealized loss at December 31, 2023 and December 31, 2022. The Company does not have the intent to sell these securities and it is more likely than not the Company will not be required to sell the securities before recovery of the securities’ amortized cost basis. This conclusion is based upon considering the Company’s cash and working capital requirements and contractual and regulatory obligations, none of which the Company believes would cause the sale of the securities. All of these securities are rated investment grade or above and have a long history of no credit losses. It is not anticipated that these securities would be settled at a price that is less than the amortized cost of the Company’s investment. In determining the risk of loss for available for sale securities, the Company considered that mortgage-backed securities are either fully guaranteed or issued by a government sponsored enterprise, which has a credit rating and perceived credit risk comparable to U.S. government, the tranche of the purchased collateralized loan obligations (“CLO”) and the issuer of Corporate securities are global systematically important banks. Each of these securities is performing according to its terms and, in the opinion of management, will continue to perform according to its terms. Based on this review, management believes that the unrealized losses have resulted from other factors not deemed credit-related and no allowance for credit loss was recorded. The Company reviewed each held-to-maturity security at December 31, 2023 and 2022 as part of its quarterly ACL process, resulting in an allowance for credit losses of $1.1 million at both December 31, 2023 and 2022. Accrued interest receivable on held-to-maturity debt securities totaled $0.1 million at both December 31, 2023 and 2022 and is excluded from the estimate of credit losses. Accrued interest receivable on available-for-sale debt securities totaled $7.1 million and $3.7 million at December 31, 2023 and 2022 respectively. The following table presents the activity in the allowance for credit losses for debt securities held-to-maturity: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the year ended December 31,
​ | ​ | 2023 | ​ | 2022 | ​ | 2021
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Beginning balance | ​ | $ | 1,100 | ​ | $ | 862 | ​ | $ | 907
Provision (benefit) | ​ | ​ | (13) | ​ | ​ | 238 | ​ |  | (45)
Allowance for credit losses | ​ | $ | 1,087 | ​ | $ | 1,100 | ​ | $ | 862
​ The Company did not have any allowance for credit losses for available for sale securities for the year ended December 31, 2023 and 2022. The Company sold available for sale securities with carrying values at the time of sale totaling $84.2 million, and $45.0 million during the years ended December 31, 2022, and 2021, respectively. The Company did not sell any available for sale securities during the year ended December 31, 2023. The Company purchased mortgage-backed available for sale securities totaling $5.4 million, $56.6 million, and $340.8 million during the years ended December 31, 2023, 2022, and 2021, respectively. The following table represents the gross gains and gross losses realized from the sale of securities available for sale for the periods indicated: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the year ended December 31,
​ |  | 2023 |  | 2022 |  | 2021
​ | ​ | (In thousands)
Gross gains from the sale of securities | ​ | $ | — | ​ | $ | — | ​ | $ | 123
Gross losses from the sale of securities | ​ |  | — | ​ |  | (10,948) | ​ |  | (10)
Net gain (loss) from the sale of securities | ​ | $ | — | ​ | $ | (10,948) | ​ | $ | 113
​ Included in “Other assets” within our Consolidated Statements of Financial Condition are amounts held in a rabbi trust for certain non-qualified deferred compensation plans totaling $26.5 million and $24.3 million at December 31, 2023 and 2022, respectively.

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