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Investment Securities | 12 Months Ended
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Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract] |
INVESTMENT SECURITIES | INVESTMENT SECURITIES The amortized cost and estimated fair value of securities available for sale along with gross unrealized gains and losses are summarized as follows:
(dollars in thousands) | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
December 31, 2021 |  |  |  |  |  |  |
U.S. treasury securities | $ | 88,638 |  |  | $ | — |  |  | $ | (1,087) |  |  | $ | 87,551 |
U.S. agency | 17,916 |  |  | 5 |  |  | (140) |  |  | 17,781 |
State, county and municipal securities | 252,632 |  |  | 877 |  |  | (3,356) |  |  | 250,153 |
Corporate debt securities | 48,153 |  |  | 520 |  |  | (265) |  |  | 48,408 |
Mortgage-backed securities | 539,172 |  |  | 2,160 |  |  | (7,061) |  |  | 534,271 |
Total debt securities | $ | 946,511 |  |  | $ | 3,562 |  |  | $ | (11,909) |  |  | $ | 938,164 |
(dollars in thousands) | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
December 31, 2020 |  |  |  |  |  |  |
U.S. treasury securities | $ | 245 |  |  | $ | — |  |  | $ | — |  |  | $ | 245 |
U.S. agency | 1,000 |  |  | 4 |  |  | — |  |  | 1,004 |
State, county and municipal securities | 61,298 |  |  | 1,155 |  |  | (65) |  |  | 62,388 |
Corporate debt securities | 4,250 |  |  | 1 |  |  | (1) |  |  | 4,250 |
Mortgage-backed securities | 305,438 |  |  | 7,837 |  |  | (348) |  |  | 312,927 |
Total debt securities | $ | 372,231 |  |  | $ | 8,997 |  |  | $ | (414) |  |  | $ | 380,814 |
The gross unrealized losses and estimated fair value of securities aggregated by category and length of time that securities have been in a continuous unrealized loss position are summarized as follows:
| Less Than 12 Months |  | 12 Months or More |  | Total
(dollars in thousands) | Estimated Fair Value |  | Unrealized Losses |  | Estimated Fair Value |  | Unrealized Losses |  | Estimated Fair Value |  | Unrealized Losses
December 31, 2021 |  |  |  |  |  |  |  |  |  |  |
U.S. treasury securities | $ | 87,302 |  |  | $ | (1,087) |  |  | $ | — |  |  | $ | — |  |  | $ | 87,302 |  |  | $ | (1,087) |
U.S. agency | 10,969 |  |  | (140) |  |  | — |  |  | — |  |  | 10,969 |  |  | (140) |
State, county and municipal securities | 180,551 |  |  | (3,131) |  |  | 5,970 |  |  | (225) |  |  | 186,521 |  |  | (3,356) |
Corporate debt securities | 31,977 |  |  | (265) |  |  | — |  |  | — |  |  | 31,977 |  |  | (265) |
Mortgage-backed securities | 377,413 |  |  | (6,421) |  |  | 21,129 |  |  | (640) |  |  | 398,542 |  |  | (7,061) |
Total debt securities | $ | 688,212 |  |  | $ | (11,044) |  |  | $ | 27,099 |  |  | $ | (865) |  |  | $ | 715,311 |  |  | $ | (11,909) |
December 31, 2020 |  |  |  |  |  |  |  |  |  |  |
State, county and municipal securities | $ | 8,282 |  |  | $ | (65) |  |  | $ | — |  |  | $ | — |  |  | $ | 8,282 |  |  | $ | (65) |
Corporate debt securities | 999 |  |  | (1) |  |  | — |  |  | — |  |  | 999 |  |  | (1) |
Mortgage-backed securities | 28,835 |  |  | (77) |  |  | 3,949 |  |  | (271) |  |  | 32,784 |  |  | (348) |
Total debt securities | $ | 38,116 |  |  | $ | (143) |  |  | $ | 3,949 |  |  | $ | (271) |  |  | $ | 42,065 |  |  | $ | (414) |
Management evaluates securities for other-than-temporary impairment at least on a quarterly basis, and more frequently when economic or market concerns warrant such evaluation. Consideration is given to (1) the length of time and the extent to which the fair value has been less than cost, (2) the financial condition and near-term prospects of the issuer, and (3) the intent and ability of the Company to retain its investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value. At December 31, 2021, 272 securities have unrealized losses from the Company’s amortized cost basis. These securities are guaranteed by either the U.S. Government, other governments or U.S. corporations. In analyzing an issuer’s financial condition, management considers whether the securities are issued by the federal government or its agencies, whether downgrades by bond rating agencies have occurred and the results of reviews of the issuer’s financial condition. The unrealized losses are largely due to increases in market interest rates over the yields available at the time the underlying securities were purchased. As management has the ability to hold debt securities until maturity, or for the foreseeable future if classified as available-for-sale, no declines are deemed to be other than temporary. The amortized cost and fair value of investment securities as of December 31, 2021, by contractual maturity, are shown hereafter. Expected maturities may differ from contractual maturities for certain investments because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. This is often the case with mortgage-backed securities, which are disclosed separately in the table below.
| Securities Available for Sale
(dollars in thousands) | Amortized Cost |  | Fair Value
Due in one year or less | $ | 453 |  |  | $ | 453 |
Due after one year through five years | 49,599 |  |  | 49,622 |
Due after five years through ten years | 144,692 |  |  | 143,011 |
Due after ten years | 212,595 |  |  | 210,807 |
| $ | 407,339 |  |  | $ | 403,893 |
Mortgage-backed securities | 539,172 |  |  | 534,271 |
| $ | 946,511 |  |  | $ | 938,164 |
Proceeds from sales of investments available for sale were $96.8 million in 2021 and $58.1 million in 2020. Gross realized gains totaled $391,000 in 2021 and $1,228,000 in 2020. Gross realized losses totaled $478,000 in 2021 and $302,000 in 2020. Investment securities having a carrying value totaling $247.4 million and $126.5 million as of December 31, 2021 and 2020, respectively, were pledged to secure public deposits and for other purposes.

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2209399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2324412 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2176304 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph (b) + Details
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