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v3.23.1

Investment Securities (Tables) | 3 Months Ended
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Mar. 31, 2023
Investment Securities [Abstract] |
Activity in the ACL on held-to maturity securities | ​
​ | ​ | ​ | ​
​ |  | Three Months ended
(Dollars in thousands) | ​ | March 31, 2023
Balance, beginning of period | ​ | $ | —
Other debt securities, provision for credit losses | ​ | ​ | 163
Balance, end of period | ​ | $ | 163
​
Schedule of Available-for-Sale Securities Reconciliation | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | Gross |  | Gross |  | Estimated
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
(Dollars in thousands) | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Value
Available-for-sale securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
March 31, 2023 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 21,587 | ​ | $ | 5 | ​ | $ | 3,283 | ​ | $ | 18,309
Mortgage-backed | ​ |  | 69,151 | ​ |  | 1 | ​ |  | 7,779 | ​ |  | 61,373
Other debt securities | ​ | ​ | 2,016 | ​ | ​ | — | ​ | ​ | 173 | ​ | ​ | 1,843
Total | ​ | $ | 92,754 | ​ | $ | 6 | ​ | $ | 11,235 | ​ | $ | 81,525
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
December 31, 2022 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 21,798 | ​ | $ | 5 | ​ | $ | 3,625 | ​ | $ | 18,178
Mortgage-backed | ​ |  | 72,183 | ​ |  | 2 | ​ |  | 8,666 | ​ |  | 63,519
Other debt securities | ​ |  | 2,018 | ​ |  | — | ​ |  | 128 | ​ |  | 1,890
Total | ​ | $ | 95,999 | ​ | $ | 7 | ​ | $ | 12,419 | ​ | $ | 83,587
​
Schedule of Held-to-Maturity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | Gross |  | Gross |  | Estimated
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
(Dollars in thousands) | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Value
Held-to-maturity securities: |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​
March 31, 2023 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 146,699 | ​ | $ | — | ​ | $ | 11,815 | ​ | $ | 134,884
Mortgage-backed | ​ | ​ | 389,924 | ​ | ​ | — | ​ | ​ | 45,379 | ​ | ​ | 344,545
States and political subdivisions | ​ |  | 1,473 | ​ |  | 54 | ​ |  | 13 | ​ |  | 1,514
Other debt securities | ​ |  | 11,000 | ​ |  | — | ​ |  | 827 | ​ |  | 10,173
Total | ​ | $ | 549,096 | ​ | $ | 54 | ​ | $ | 58,034 | ​ | $ | 491,116
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
December 31, 2022 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 148,097 | ​ | $ | — | ​ | $ | 13,601 | ​ | $ | 134,496
Mortgage-backed | ​ | ​ | 398,884 | ​ | ​ | — | ​ | ​ | 50,464 | ​ | ​ | 348,420
States and political subdivisions | ​ |  | 1,474 | ​ |  | 35 | ​ |  | 28 | ​ |  | 1,481
Other debt securities | ​ |  | 11,000 | ​ |  | — | ​ |  | 770 | ​ |  | 10,230
Total | ​ | $ | 559,455 | ​ | $ | 35 | ​ | $ | 64,863 | ​ | $ | 494,627
​
Schedule of Amortized Cost of Held-to-Maturity Securities Based on Credit Rating | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | March 31, 2023
​ | ​ | ​ | Investment Grade
(Dollars in thousands) | ​ | ​ | Aaa | ​ | ​ | Aa1 | ​ | ​ | A3 | ​ | ​ | Baa1 | ​ | ​ | Baa2 | ​ | ​ | Baa3 | ​ | ​ | NR
U.S. Government agencies | ​ | $ | 137,358 | ​ | $ | — | ​ | $ | — | ​ | $ | — | ​ | $ | — | ​ | $ | — | ​ | $ | 9,341
Mortgage-backed | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 389,924
States and political subdivisions | ​ | ​ | — | ​ | ​ | 1,473 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Other debt securities | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 4,000 | ​ | ​ | 4,000 | ​ | ​ | 500 | ​ | ​ | 500 | ​ | ​ | 2,000
Total Held-to Maturity Securities | ​ | $ | 137,358 | ​ | $ | 1,473 | ​ | $ | 4,000 | ​ | $ | 4,000 | ​ | $ | 500 | ​ | $ | 500 | ​ | $ | 401,265
​
Available-For-Sale Securities and Held-to-Maturity, Continuous Unrealized Loss Position, Fair Value | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Less than | ​ | More than | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 12 Months | ​ | 12 Months | ​ | Total
​ |  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
(Dollars in thousands) | ​ | Value | ​ | Losses | ​ | Value | ​ | Losses | ​ | Value | ​ | Losses
March 31, 2023 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Available-for-sale securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 1,060 | ​ | $ | 6 | ​ | $ | 16,833 | ​ | $ | 3,277 | ​ | $ | 17,893 | ​ | $ | 3,283
Mortgage-backed | ​ |  | 1,754 | ​ |  | 32 | ​ |  | 59,277 | ​ |  | 7,747 | ​ |  | 61,031 | ​ |  | 7,779
Other debt securities | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1,843 | ​ | ​ | 173 | ​ | ​ | 1,843 | ​ | ​ | 173
Total | ​ | $ | 2,814 | ​ | $ | 38 | ​ | $ | 77,953 | ​ | $ | 11,197 | ​ | $ | 80,767 | ​ | $ | 11,235
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Less than | ​ | More than | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 12 Months | ​ | 12 Months | ​ | Total
​ |  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
(Dollars in thousands) | ​ | Value | ​ | Losses | ​ | Value | ​ | Losses | ​ | Value | ​ | Losses
December 31, 2022 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Available-for-sale securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 1,165 | ​ | $ | 4 | ​ | $ | 16,585 | ​ | $ | 3,588 | ​ | $ | 17,750 | ​ | $ | 3,592
Mortgage-backed | ​ |  | 29,125 | ​ |  | 2,409 | ​ |  | 34,167 | ​ |  | 6,290 | ​ |  | 63,292 | ​ |  | 8,699
Other debt securities | ​ | ​ | 1,890 | ​ | ​ | 128 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1,890 | ​ | ​ | 128
Total | ​ | $ | 32,180 | ​ | $ | 2,541 | ​ | $ | 50,752 | ​ | $ | 9,878 | ​ | $ | 82,932 | ​ | $ | 12,419
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Held-to-maturity securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 67,332 | ​ | $ | 2,786 | ​ | $ | 67,163 | ​ | $ | 10,815 | ​ | $ | 134,495 | ​ | $ | 13,601
Mortgage-backed | ​ | ​ | 148,771 | ​ | ​ | 9,402 | ​ | ​ | 199,649 | ​ | ​ | 41,062 | ​ | ​ | 348,420 | ​ | ​ | 50,464
States and political subdivisions | ​ | ​ | 780 | ​ | ​ | 28 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 780 | ​ | ​ | 28
Other debt securities | ​ |  | 8,091 | ​ |  | 409 | ​ |  | 2,139 | ​ |  | 361 | ​ |  | 10,230 | ​ |  | 770
Total | ​ | $ | 224,974 | ​ | $ | 12,625 | ​ | $ | 268,951 | ​ | $ | 52,238 | ​ | $ | 493,925 | ​ | $ | 64,863
​
Schedule of Securities Debt Maturities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Available for sale | ​ | Held to maturity
​ |  | Amortized |  | ​ | ​ |  | Amortized |  | ​ | ​
(Dollars in thousands) | ​ | Cost | ​ | Fair Value | ​ | Cost | ​ | Fair Value
Due in one year or less | ​ | $ | 46 | ​ | $ | 46 | ​ | $ | 1,061 | ​ | $ | 1,042
Due after one year through five years | ​ |  | 7,004 | ​ |  | 6,733 | ​ |  | 118,384 | ​ |  | 111,443
Due after five years through ten years | ​ |  | 40,359 | ​ |  | 36,068 | ​ |  | 65,244 | ​ |  | 59,798
Due after ten years | ​ |  | 45,345 | ​ |  | 38,678 | ​ |  | 364,407 | ​ |  | 318,833
Total | ​ | $ | 92,754 | ​ | $ | 81,525 | ​ | $ | 549,096 | ​ | $ | 491,116
​

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- Definition Tabular disclosure of reconciliation of amount, excluding accrued interest, of allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity). + References No definition available. + Details
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