| Amortized cost and estimated fair values of investments in securities |
| | | | | | | | | | | | | | | | | | Gross | | Gross | | | | | | Amortized | | Unrealized | | Unrealized | | | (Dollars in thousands) | | Cost | | Gains | | Losses | | Fair Value | December 31, 2021 | | | | | | | | | | | | | Debt securities available for sale: | | | | | | | | | | | | | State and municipal securities | | $ | 168,541 | | $ | 4,451 | | $ | (392) | | $ | 172,600 | U.S. Treasury securities | | | 11,888 | | | — | | | (91) | | | 11,797 | U.S. agency securities: | | | | | | | | | | | | | Callable debentures | | | 3,000 | | | — | | | (27) | | | 2,973 | Collateralized mortgage obligations | | | 63,129 | | | 115 | | | (862) | | | 62,382 | Mortgage-backed securities | | | 173,446 | | | 1,805 | | | (1,130) | | | 174,121 | Equity securities | | | 1,189 | | | — | | | (16) | | | 1,173 | Total | | $ | 421,193 | | $ | 6,371 | | $ | (2,518) | | $ | 425,046 | December 31, 2020 | | | | | | | | | | | | | Debt securities available for sale: | | | | | | | | | | | | | State and municipal securities | | $ | 88,741 | | $ | 4,296 | | $ | — | | $ | 93,037 | U.S. agency securities: | | | | | | | | | | | | | Collateralized mortgage obligations | | | 35,085 | | | 347 | | | (30) | | | 35,402 | Mortgage-backed securities | | | 103,686 | | | 3,963 | | | — | | | 107,649 | Equity securities | | | 1,176 | | | 17 | | | — | | | 1,193 | Total | | $ | 228,688 | | $ | 8,623 | | $ | (30) | | $ | 237,281 |
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| Amortized cost and estimated fair value of securities by contractual maturities |
| | | | | | | | | | | | | | | | (Dollars in thousands) | | 1 Year or Less | | After 1 Year to 5 Years | | After 5 Years to 10 Years | | After 10 Years | | Total | December 31, 2021 | | | | | | | | | | | | | | | | Amortized cost: | | | | | | | | | | | | | | | | Debt securities available for sale: | | | | | | | | | | | | | | | | State and municipal securities | | $ | 881 | | $ | — | | $ | 12,339 | | $ | 155,321 | | $ | 168,541 | U.S. Treasury securities | | | — | | | 6,138 | | | 5,750 | | | — | | | 11,888 | U.S. agency securities: | | | | | | | | | | | | | | | | Callable debentures | | | — | | | — | | | 3,000 | | | — | | | 3,000 | Collateralized mortgage obligations | | | — | | | — | | | 4,528 | | | 58,601 | | | 63,129 | Mortgage-backed securities | | | — | | | 953 | | | 4,056 | | | 168,437 | | | 173,446 | Equity securities | | | 1,189 | | | — | | | — | | | — | | | 1,189 | Total | | $ | 2,070 | | $ | 7,091 | | $ | 29,673 | | $ | 382,359 | | $ | 421,193 | Fair value: | | | | | | | | | | | | | | | | Debt securities available for sale: | | | | | | | | | | | | | | | | State and municipal securities | | $ | 883 | | $ | — | | $ | 12,905 | | $ | 158,812 | | $ | 172,600 | U.S. Treasury securities | | | — | | | 6,072 | | | 5,725 | | | — | | | 11,797 | U.S. agency securities: | | | | | | | | | | | | | | | | Callable debentures | | | — | | | — | | | 2,973 | | | — | | | 2,973 | Collateralized mortgage obligations | | | — | | | — | | | 4,591 | | | 57,791 | | | 62,382 | Mortgage-backed securities | | | — | | | 994 | | | 4,166 | | | 168,961 | | | 174,121 | Equity securities | | | 1,173 | | | — | | | — | | | — | | | 1,173 | Total | | $ | 2,056 | | $ | 7,066 | | $ | 30,360 | | $ | 385,564 | | $ | 425,046 |
| | | | | | | | | | | | | | | | (Dollars in thousands) | | 1 Year or Less | | After 1 Year to 5 Years | | After 5 Years to 10 Years | | After 10 Years | | Total | December 31, 2020 | | | | | | | | | | | | | | | | Amortized cost: | | | | | | | | | | | | | | | | Debt securities available for sale: | | | | | | | | | | | | | | | | State and municipal securities | | $ | 509 | | $ | 1,292 | | $ | 9,154 | | $ | 77,786 | | $ | 88,741 | U.S. agency securities: | | | | | | | | | | | | | | | | Collateralized mortgage obligations | | | — | | | — | | | 4,910 | | | 30,175 | | | 35,085 | Mortgage-backed securities | | | 33 | | | 1,485 | | | 798 | | | 101,370 | | | 103,686 | Equity securities | | | 1,176 | | | — | | | — | | | — | | | 1,176 | Total | | $ | 1,718 | | $ | 2,777 | | $ | 14,862 | | $ | 209,331 | | $ | 228,688 | Fair value: | | | | | | | | | | | | | | | | Debt securities available for sale: | | | | | | | | | | | | | | | | State and municipal securities | | $ | 512 | | $ | 1,298 | | $ | 9,540 | | $ | 81,687 | | $ | 93,037 | U.S. agency securities: | | | | | | | | | | | | | | | | Collateralized mortgage obligations | | | — | | | — | | | 5,075 | | | 30,327 | | | 35,402 | Mortgage-backed securities | | | 33 | | | 1,565 | | | 829 | | | 105,222 | | | 107,649 | Equity securities | | | 1,193 | | | — | | | — | | | — | | | 1,193 | Total | | $ | 1,738 | | $ | 2,863 | | $ | 15,444 | | $ | 217,236 | | $ | 237,281 | | | | | | | | | | | | | | | | |
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| Securities with unrealized losses, aggregated by category and length of time |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Less than Twelve Months | | Twelve Months or More | | | | | Gross | | | | Gross | | | Fair | | Unrealized | | Fair | | Unrealized | (Dollars in thousands) | | Value | | Losses | | Value | | Losses | December 31, 2021 | | | | | | | | | | | | | Debt securities available for sale: | | | | | | | | | | | | | State and municipal securities | | $ | 36,962 | | $ | (387) | | $ | 257 | | $ | (5) | U.S. Treasury securities | | | 11,797 | | | (91) | | | — | | | — | U.S. agency securities: | | | | | | | | | | | | | Callable debentures | | | 2,973 | | | (27) | | | — | | | — | Collateralized mortgage obligations | | | 40,776 | | | (860) | | | 241 | | | (2) | Mortgage-backed securities | | | 87,220 | | | (1,130) | | | — | | | — | Equity securities | | | 1,173 | | | (16) | | | — | | | — | | | $ | 180,901 | | $ | (2,511) | | $ | 498 | | $ | (7) | December 31, 2020 | | | | | | | | | | | | | Debt securities available for sale: | | | | | | | | | | | | | State and municipal securities | | $ | 263 | | $ | — | | $ | — | | $ | — | U.S. agency securities: | | | | | | | | | | | | | Collateralized mortgage obligations | | | 6,913 | | | (30) | | | — | | | — | Mortgage-backed securities | | | — | | | — | | | — | | | — | Equity securities | | | — | | | — | | | — | | | — | | | $ | 7,176 | | $ | (30) | | $ | — | | $ | — |
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