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Securities | 9 Months Ended
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Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract] |
Securities | Securities The amortized cost, unrealized gross gains and losses recognized in accumulated other comprehensive income (loss), and fair value of Securities Available-for-Sale were as follows:
Securities Available-for-Sale: |  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Allowance for Credit Losses |  | Fair Value
September 30, 2021 |  |  |  |  |  |  |  |  |  |
Obligations of State and Political Subdivisions |  | $ | 813,088 |  |  | $ | 26,425 |  |  | $ | (6,060) |  |  | $ | — |  |  | $ | 833,453 |
MBS/CMO |  | 728,789 |  |  | 6,250 |  |  | (8,407) |  |  | — |  |  | 726,632 |
US Gov't Sponsored Entities & Agencies |  | 139,245 |  |  | 23 |  |  | (3,128) |  |  | — |  |  | 136,140 |
Total |  | $ | 1,681,122 |  |  | $ | 32,698 |  |  | $ | (17,595) |  |  | $ | — |  |  | $ | 1,696,225 |
December 31, 2020 |  |  |  |  |  |  |  |  |  |
Obligations of State and Political Subdivisions |  | $ | 548,273 |  |  | $ | 33,077 |  |  | $ | (103) |  |  | $ | — |  |  | $ | 581,247 |
MBS/CMO |  | 535,526 |  |  | 12,806 |  |  | (25) |  |  | — |  |  | 548,307 |
US Gov't Sponsored Entities & Agencies |  | 88,376 |  |  | 120 |  |  | (198) |  |  | — |  |  | 88,298 |
Total |  | $ | 1,172,175 |  |  | $ | 46,003 |  |  | $ | (326) |  |  | $ | — |  |  | $ | 1,217,852 |
All mortgage-backed securities in the above table (identified above and throughout this Note 4 as "MBS/CMO") are residential and multi-family mortgage-backed securities and guaranteed by government sponsored entities. The US Gov't Sponsored Entities & Agencies in the above table have underlying collateral of equipment, machinery and commercial real estate. The amortized cost and fair value of Securities at September 30, 2021 by contractual maturity are shown below. Expected maturities may differ from contractual maturities because some issuers have the right to call or prepay certain obligations with or without call or prepayment penalties. Mortgage-backed Securities are not due at a single maturity date and are shown separately.
Securities Available-for-Sale: |  | Amortized Cost |  | Fair Value
Due in one year or less |  | $ | 2,150 |  |  | $ | 2,173 |
Due after one year through five years |  | 22,212 |  |  | 23,391 |
Due after five years through ten years |  | 68,621 |  |  | 73,304 |
Due after ten years |  | 720,105 |  |  | 734,585 |
MBS/CMO |  | 728,789 |  |  | 726,632 |
US Gov't Sponsored Entities & Agencies |  | 139,245 |  |  | 136,140 |
Total |  | $ | 1,681,122 |  |  | $ | 1,696,225 |
Proceeds from the Sales of Securities are summarized below:
|  | Three Months Ended |  | Three Months Ended
|  | September 30, 2021 |  | September 30, 2020
Proceeds from Sales |  | $ | 36,075 |  |  | $ | 11,270 |
Gross Gains on Sales |  | 218 |  |  | 607 |
Income Taxes on Gross Gains |  | 46 |  |  | 127 |
|  | Nine Months Ended |  | Nine Months Ended
|  | September 30, 2021 |  | September 30, 2020
Proceeds from Sales |  | $ | 102,823 |  |  | $ | 74,693 |
Gross Gains on Sales |  | 1,493 |  |  | 2,190 |
Income Taxes on Gross Gains |  | 314 |  |  | 464 |
The carrying value of securities pledged to secure repurchase agreements, public and trust deposits, and for other purposes as required by law was $190,514 and $237,506 as of September 30, 2021 and December 31, 2020, respectively. Below is a summary of securities with unrealized losses as of September 30, 2021 and December 31, 2020, presented by length of time the securities have been in a continuous unrealized loss position:
|  | Less than 12 Months |  | 12 Months or More |  | Total
September 30, 2021 |  | Fair Value |  | Unrealized Loss |  | Fair Value |  | Unrealized Loss |  | Fair Value |  | Unrealized Loss
Obligations of State and Political Subdivisions |  | $ | 303,113 |  |  | $ | (5,917) |  |  | $ | 1,452 |  |  | $ | (143) |  |  | $ | 304,565 |  |  | $ | (6,060) |
MBS/CMO |  | 475,726 |  |  | (8,404) |  |  | 309 |  |  | (3) |  |  | 476,035 |  |  | (8,407) |
US Gov't Sponsored Entities & Agencies |  | 126,137 |  |  | (3,128) |  |  | — |  |  | — |  |  | 126,137 |  |  | (3,128) |
Total |  | $ | 904,976 |  |  | $ | (17,449) |  |  | $ | 1,761 |  |  | $ | (146) |  |  | $ | 906,737 |  |  | $ | (17,595) |
|  | Less than 12 Months |  | 12 Months or More |  | Total
December 31, 2020 |  | Fair Value |  | Unrealized Loss |  | Fair Value |  | Unrealized Loss |  | Fair Value |  | Unrealized Loss
Obligations of State and Political Subdivisions |  | $ | 10,652 |  |  | $ | (103) |  |  | $ | — |  |  | $ | — |  |  | $ | 10,652 |  |  | $ | (103) |
MBS/CMO |  | 19,631 |  |  | (25) |  |  | — |  |  | — |  |  | 19,631 |  |  | (25) |
US Gov't Sponsored Entities & Agencies |  | 59,054 |  |  | (198) |  |  | — |  |  | — |  |  | 59,054 |  |  | (198) |
Total |  | $ | 89,337 |  |  | $ | (326) |  |  | $ | — |  |  | $ | — |  |  | $ | 89,337 |  |  | $ | (326) |
Available-for-sale debt securities in unrealized loss positions are evaluated for impairment related to credit losses at least quarterly. For available-for-sale debt securities in an unrealized loss position, the Company assesses whether we intend to sell, or it is more likely than not that we will be required to sell the security before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the security’s amortized cost basis is reduced to fair value with an allowance. For available-for sale debt securities that do not meet the criteria, the Company evaluates whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, management considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency, and adverse conditions specifically related to the security and the issuer, among other factors. If this assessment indicates that a credit loss exists, we compare the present value of cash flows expected to be collected from the security with the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis for the security, a credit loss exists and an allowance for credit losses is recorded, limited to the amount that the fair value of the security is less than its amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income, net of applicable taxes. No allowance for credit losses for available-for-sale debt securities was needed at September 30, 2021 or December 31, 2020. Accrued interest receivable on available-for-sale debt securities totaled $8,143 at September 30, 2021 and $5,954 at December 31, 2020. Accrued interest receivable is excluded from the estimate of credit losses. The Company's equity securities are listed as Other Investments on the Consolidated Balance Sheets and consist of one non-controlling investment in a single banking organization at September 30, 2021 and December 31, 2020. The original investment totaled $1,350 and other-than-temporary impairment was previously recorded totaling $997. The Company's equity securities are considered not to have readily determinable fair value and are carried at cost and evaluated for impairment. At September 30, 2021, there was no additional impairment recognized through earnings.

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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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