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Securities | 9 Months Ended
--- | ---
Sep. 30, 2023
Notes to Financial Statements |
Securities | 4. Securities ​ The following table summarizes the Company’s portfolio of securities held-to-maturity on September 30, 2023: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross
​ | ​ | Amortized | ​ | ​ | ​ | ​ | Unrecognized | ​ | Unrecognized
​ |  | Cost |  | Fair Value |  | Gains | ​ | Losses
​ | ​ | (In thousands)
Municipals | ​ | $ | 66,353 | ​ | $ | 51,031 | ​ | $ | — | ​ | $ | 15,322
Total municipals | ​ |  | 66,353 | ​ |  | 51,031 | ​ |  | — | ​ |  | 15,322
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
FNMA | ​ |  | 7,860 | ​ |  | 6,634 | ​ |  | — | ​ |  | 1,226
Total mortgage-backed securities | ​ |  | 7,860 | ​ |  | 6,634 | ​ |  | — | ​ |  | 1,226
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Allowance for credit losses | ​ | ​ | (1,082) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Total | ​ | $ | 73,131 | ​ | $ | 57,665 | ​ | $ | — | ​ | $ | 16,548
​ The following table summarizes the Company’s portfolio of securities held-to-maturity on 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
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Allowance for credit losses | ​ | ​ | (1,100) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Total | ​ | $ | 73,711 | ​ | $ | 62,550 | ​ | $ | — | ​ | $ | 12,261
​ ​ The following table summarizes the Company’s portfolio of securities available for sale on September 30, 2023: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross
​ | ​ | Amortized | ​ | ​ | ​ | ​ | Unrealized | ​ | Unrealized
​ |  | Cost |  | Fair Value |  | Gains |  | Losses
​ | ​ | (In thousands)
U.S. government agencies | ​ | $ | 83,037 | ​ | $ | 81,481 | ​ | $ | 138 | ​ | $ | 1,694
Corporate | ​ | ​ | 173,139 | ​ | ​ | 152,345 | ​ | ​ | — | ​ | ​ | 20,794
Mutual funds | ​ |  | 11,066 | ​ |  | 11,066 | ​ |  | — | ​ |  | —
Collateralized loan obligations | ​ |  | 260,727 | ​ |  | 259,441 | ​ |  | 411 | ​ |  | 1,697
Other | ​ |  | 1,451 | ​ |  | 1,451 | ​ |  | — | ​ |  | —
Total other securities | ​ |  | 529,420 | ​ |  | 505,784 | ​ |  | 549 | ​ |  | 24,185
REMIC and CMO | ​ |  | 164,303 | ​ |  | 131,476 | ​ |  | — | ​ |  | 32,827
GNMA | ​ |  | 8,678 | ​ |  | 6,542 | ​ |  | 1 | ​ |  | 2,137
FNMA | ​ |  | 157,897 | ​ |  | 128,781 | ​ |  | — | ​ |  | 29,116
FHLMC | ​ |  | 90,942 | ​ |  | 71,080 | ​ |  | — | ​ |  | 19,862
Total mortgage-backed securities | ​ |  | 421,820 | ​ |  | 337,879 | ​ |  | 1 | ​ |  | 83,942
Total Securities excluding portfolio layer adjustments | ​ | ​ | 951,240 | ​ | ​ | 843,663 | ​ | ​ | 550 | ​ | ​ | 108,127
Unallocated portfolio layer basis adjustments (1) | ​ | ​ | (7,721) | ​ | ​ | n/a | ​ | ​ | — | ​ | ​ | (7,721)
Total securities available for sale | ​ | $ | 943,519 | ​ | $ | 843,663 | ​ | $ | 550 | ​ | $ | 100,406
(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, 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 September 30, 2023 and December 31, 2022, are issued by U.S. banking institutions. The CMOs held by the Company at September 30, 2023 and December 31, 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 September 30, 2023, by contractual maturity. Expected maturities may 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 | ​ | $ | 66,353 | ​ | $ | 51,031
Total other securities | ​ | ​ | 66,353 | ​ | ​ | 51,031
Mortgage-backed securities | ​ | ​ | 7,860 | ​ | ​ | 6,634
​ | ​ | ​ | 74,213 | ​ | ​ | 57,665
​ | ​ | ​ | ​ | ​ | ​ | ​
Allowance for credit losses | ​ | ​ | (1,082) | ​ | ​ | -
Total securities held-to-maturity |  | $ | 73,131 |  | $ | 57,665
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Amortized | ​ | ​ | ​
Securities available for sale (1): |  | Cost |  | Fair Value
​ | ​ | (In thousands)
Due in one year or less |  | $ | 59,934 |  | $ | 58,951
Due after one year through five years | ​ | ​ | 84,849 | ​ | ​ | 79,070
Due after five years through ten years | ​ | ​ | 244,126 | ​ |  | 227,135
Due after ten years | ​ | ​ | 129,445 | ​ | ​ | 129,562
Total other securities | ​ |  | 518,354 | ​ |  | 494,718
Mutual funds | ​ |  | 11,066 | ​ |  | 11,066
Mortgage-backed securities | ​ |  | 421,820 | ​ |  | 337,879
Total securities available for sale | ​ | $ | 951,240 | ​ | $ | 843,663
​ (1) The table above excludes the unallocated portfolio layer basis adjustments totaling $7.7 million related to AFS securities hedged in a closed portfolio at September 30, 2023. See Note 11 (“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 the dates indicated: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | At September 30, 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 | ​ | $ | 51,031 | ​ | $ | 15,322 | ​ | $ | — | ​ | $ | — | ​ | $ | 51,031 | ​ | $ | 15,322
Total other securities |  | 3 | ​ |  | 51,031 | ​ |  | 15,322 | ​ |  | — | ​ |  | — | ​ |  | 51,031 | ​ |  | 15,322
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
FNMA |  | 1 | ​ |  | 6,634 | ​ |  | 1,226 | ​ |  | — | ​ |  | — | ​ |  | 6,634 | ​ |  | 1,226
Total mortgage-backed securities |  | 1 | ​ |  | 6,634 | ​ |  | 1,226 | ​ |  | — | ​ |  | — | ​ |  | 6,634 | ​ |  | 1,226
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total |  | 4 | ​ | $ | 57,665 | ​ | $ | 16,548 | ​ | $ | — | ​ | $ | — | ​ | $ | 57,665 | ​ | $ | 16,548
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Available for sale securities (1) |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
U.S. Government Agencies & Treasury |  | 8 | ​ | $ | 74,192 | ​ | $ | 1,694 | ​ | $ | 5,316 | ​ | $ | 26 | ​ | $ | 68,876 | ​ | $ | 1,668
Corporate |  | 26 | ​ |  | 152,345 | ​ |  | 20,794 | ​ |  | 29,023 | ​ |  | 2,679 | ​ |  | 123,322 | ​ |  | 18,115
CLO |  | 20 | ​ |  | 148,517 | ​ |  | 1,697 | ​ |  | 28,056 | ​ |  | 71 | ​ |  | 120,461 | ​ |  | 1,626
Total other securities |  | 54 | ​ |  | 375,054 | ​ |  | 24,185 | ​ |  | 62,395 | ​ |  | 2,776 | ​ |  | 312,659 | ​ |  | 21,409
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
REMIC and CMO |  | 46 | ​ |  | 131,210 | ​ |  | 32,827 | ​ |  | — | ​ |  | — | ​ |  | 131,210 | ​ |  | 32,827
GNMA |  | 12 | ​ |  | 6,458 | ​ |  | 2,137 | ​ |  | 113 | ​ |  | 2 | ​ |  | 6,345 | ​ |  | 2,135
FNMA |  | 47 | ​ |  | 128,781 | ​ |  | 29,116 | ​ |  | 2,085 | ​ |  | 101 | ​ |  | 126,696 | ​ |  | 29,015
FHLMC |  | 18 | ​ |  | 71,080 | ​ |  | 19,862 | ​ |  | — | ​ |  | — | ​ |  | 71,080 | ​ |  | 19,862
Total mortgage-backed securities |  | 123 | ​ |  | 337,529 | ​ |  | 83,942 | ​ |  | 2,198 | ​ |  | 103 | ​ |  | 335,331 | ​ |  | 83,839
Total |  | 177 | ​ | $ | 712,583 | ​ | $ | 108,127 | ​ | $ | 64,593 | ​ | $ | 2,879 | ​ | $ | 647,990 | ​ | $ | 105,248
(1) The table above excludes the unallocated portfolio layer basis adjustments totaling $7.7 million related to AFS securities hedged in a closed portfolio at September 30, 2023. See Note 11 (“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 security that had an unrealized loss at September 30, 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. If the Company identifies any decline in the fair value due to credit loss factors and evaluation indicates that a credit loss exists, then the present value of cash flows that is expected to be collected from the security is compared to the amortized cost basis of the security. If the present value of the cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost basis. 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 the U.S. government, and that issuers of the 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 September 30, 2023, and December 31, 2022 as part of its quarterly Current Expected Credit Loss (“CECL”) process, resulting in an allowance for credit losses of $1.1 million at each of September 30, 2023 and December 31, 2022. It is the Company’s policy to exclude accrued interest receivable from the calculation of the allowance for credit losses on held-to-maturity and the valuation of available for sale securities. Accrued interest receivable on held-to-maturity securities totaled $0.1 million each at September 30, 2023 and December 31, 2022 and accrued interest receivable on available for sale debt securities totaled $6.7 million and $3.7 million at September 30, 2023 and December 31, 2022, respectively. 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,
​ | 2023 | ​ | 2022 | ​ | 2023 | ​ | 2022
​ | ​ | (In thousands)
Beginning balance | $ | 1,079 | ​ | $ | 1,085 | ​ | $ | 1,100 | ​ | $ | 862
Provision (benefit) |  | 3 | ​ |  | 11 | ​ | ​ | (18) | ​ |  | 234
Allowance for credit losses | $ | 1,082 | ​ | $ | 1,096 | ​ | $ | 1,082 | ​ | $ | 1,096
​ Realized gains and losses on the sales of securities are determined using the specific identification method. The Company did not sell any securities during the three and nine months ended September 30, 2023 and 2022.

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