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SECURITIES | 12 Months Ended
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Dec. 31, 2020
SECURITIES |
SECURITIES | 7. SECURITIES Amortized cost and fair value of available-for-sale debt securities at December 31, 2020 and 2019 are summarized as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(In Thousands) |  | December 31, 2020
​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Unrealized | ​ | Unrealized | ​ | ​ | ​
​ |  | Amortized |  | Holding |  | Holding |  | Fair
​ |  | Cost |  | Gains |  | Losses |  | Value
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Obligations of the U.S. Treasury | ​ | $ | 12,184 | ​ | $ | 0 | ​ | $ | (2) | ​ | $ | 12,182
Obligations of U.S. Government agencies | ​ | ​ | 25,349 | ​ | ​ | 1,003 | ​ | ​ | (8) | ​ | ​ | 26,344
Obligations of states and political subdivisions: | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  |
Tax-exempt | ​ |  | 116,427 | ​ |  | 6,000 | ​ |  | (26) | ​ |  | 122,401
Taxable | ​ |  | 45,230 | ​ |  | 2,246 | ​ |  | (24) | ​ |  | 47,452
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Residential pass-through securities | ​ |  | 36,853 | ​ |  | 1,323 | ​ |  | 0 | ​ |  | 38,176
Residential collateralized mortgage obligations | ​ |  | 56,048 | ​ |  | 1,428 | ​ |  | (9) | ​ |  | 57,467
Commercial mortgage-backed securities | ​ |  | 42,461 | ​ |  | 2,849 | ​ |  | 0 | ​ |  | 45,310
Total available-for-sale debt securities | ​ | $ | 334,552 | ​ | $ | 14,849 | ​ | $ | (69) | ​ | $ | 349,332
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(In Thousands) |  | December 31, 2019
​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ |  | ​ |  | Unrealized | ​ | Unrealized | ​ | ​ | ​
​ |  | Amortized |  | Holding |  | Holding |  | Fair
​ |  | Cost |  | Gains |  | Losses |  | Value
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Obligations of U.S. Government agencies | ​ | $ | 16,380 | ​ | $ | 620 | ​ | $ | 0 | ​ | $ | 17,000
Obligations of states and political subdivisions: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Tax-exempt | ​ |  | 68,787 | ​ |  | 2,011 | ​ |  | (38) | ​ |  | 70,760
Taxable | ​ |  | 35,446 | ​ |  | 927 | ​ |  | (70) | ​ |  | 36,303
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Residential pass-through securities | ​ |  | 58,875 | ​ |  | 472 | ​ |  | (137) | ​ |  | 59,210
Residential collateralized mortgage obligations | ​ |  | 115,025 | ​ |  | 308 | ​ |  | (610) | ​ |  | 114,723
Commercial mortgage-backed securities | ​ |  | 47,765 | ​ |  | 1,069 | ​ |  | (107) | ​ |  | 48,727
Total available-for-sale debt securities | ​ | $ | 342,278 | ​ | $ | 5,407 | ​ | $ | (962) | ​ | $ | 346,723
​ The following table presents gross unrealized losses and fair value of available-for-sale debt securities with unrealized loss positions that are not deemed to be other-than-temporarily impaired, aggregated by length of time that individual securities have been in a continuous unrealized loss position at December 31, 2020 and 2019: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
December 31, 2020 |  | Less Than 12 Months |  | 12 Months or More |  | Total
(In Thousands) | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized
​ |  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
Obligations of the U.S. Treasury | ​ | $ | 9,159 | ​ | $ | (2) | ​ | $ | 0 | ​ | $ | 0 | ​ | $ | 9,159 | ​ | $ | (2)
Obligations of U.S. Government agencies | ​ | ​ | 4,992 | ​ | ​ | (8) | ​ | ​ | 0 | ​ | ​ | 0 | ​ | ​ | 4,992 | ​ | ​ | (8)
Obligations of states and political subdivisions: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Tax-exempt | ​ | ​ | 3,811 | ​ | ​ | (26) | ​ | ​ | 0 | ​ | ​ | 0 | ​ | ​ | 3,811 | ​ | ​ | (26)
Taxable | ​ |  | 5,235 | ​ |  | (24) | ​ |  | 0 | ​ |  | 0 | ​ |  | 5,235 | ​ |  | (24)
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Residential collateralized mortgage obligations | ​ |  | 2,861 | ​ |  | (9) | ​ |  | 0 | ​ |  | 0 | ​ |  | 2,861 | ​ |  | (9)
Total temporarily impaired available for sale debt securities | ​ | $ | 26,058 | ​ | $ | (69) | ​ | $ | 0 | ​ | $ | 0 | ​ | $ | 26,058 | ​ | $ | (69)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
December 31, 2019 |  | Less Than 12 Months |  | 12 Months or More |  | Total
(In Thousands) | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized
​ |  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
Obligations of states and political subdivisions: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Tax-exempt | ​ | $ | 6,429 | ​ | $ | (38) | ​ | $ | 0 | ​ | $ | 0 | ​ | $ | 6,429 | ​ | $ | (38)
Taxable | ​ |  | 5,624 | ​ |  | (68) | ​ |  | 161 | ​ |  | (2) | ​ |  | 5,785 | ​ |  | (70)
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​
Residential pass-through securities | ​ |  | 9,771 | ​ |  | (35) | ​ |  | 14,787 | ​ |  | (102) | ​ |  | 24,558 | ​ |  | (137)
Residential collateralized mortgage obligations | ​ |  | 31,409 | ​ |  | (195) | ​ |  | 30,535 | ​ |  | (415) | ​ |  | 61,944 | ​ |  | (610)
Commercial mortgage-backed securities | ​ |  | 0 | ​ |  | 0 | ​ |  | 8,507 | ​ |  | (107) | ​ |  | 8,507 | ​ |  | (107)
Total temporarily impaired available-for-sale debt securities | ​ | $ | 53,233 | ​ | $ | (336) | ​ | $ | 53,990 | ​ | $ | (626) | ​ | $ | 107,223 | ​ | $ | (962)
​ Gross realized gains and losses from available-for-sale securities and the related income tax provision were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
(In Thousands) | ​ | 2020 | ​ | 2019
Gross realized gains from sales | ​ | $ | 222 | ​ | $ | 24
Gross realized losses from sales | ​ |  | (53) | ​ |  | (1)
Net realized gains | ​ | $ | 169 | ​ | $ | 23
Income tax provision related to net realized gains | ​ | $ | 35 | ​ | $ | 5
​ The amortized cost and fair value of available-for-sale debt securities by contractual maturity are shown in the following table as of December 31, 2020. Actual maturities may differ from contractual maturities because counterparties may have the right to call or prepay obligations with or without call or prepayment penalties. ​
​ | ​ | ​ | ​ | ​ | ​ | ​
(In Thousands) | ​ | December 31, 2020
​ | ​ | Amortized | ​ | Fair
​ |  | Cost |  | Value
Due in one year or less | ​ | $ | 13,409 | ​ | $ | 13,506
Due from one year through five years | ​ |  | 46,172 | ​ |  | 47,758
Due from five years through ten years | ​ |  | 47,535 | ​ |  | 50,110
Due after ten years | ​ |  | 92,074 | ​ |  | 97,005
Sub-total | ​ |  | 199,190 | ​ |  | 208,379
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: | ​ |  |  | ​ |  |
Residential pass-through securities | ​ |  | 36,853 | ​ |  | 38,176
Residential collateralized mortgage obligations | ​ |  | 56,048 | ​ |  | 57,467
Commercial mortgage-backed securities | ​ |  | 42,461 | ​ |  | 45,310
Total | ​ | $ | 334,552 | ​ | $ | 349,332
​ The Corporation’s mortgage-backed securities and collateralized mortgage obligations have stated maturities that may differ from actual maturities due to borrowers’ ability to prepay obligations. Cash flows from such investments are dependent upon the performance of the underlying mortgage loans and are generally influenced by the level of interest rates. In the table above, mortgage-backed securities and collateralized mortgage obligations are shown in one period. Investment securities carried at $247,373,000 at December 31, 2020 and $215,270,000 at December 31, 2019 were pledged as collateral for public deposits, trusts and certain other deposits as provided by law. See Note 12 for information concerning securities pledged to secure borrowing arrangements and Note 21 for information related to securities pledged against interest rate swap obligations. Management evaluates securities for OTTI at least on a quarterly basis, and more frequently when economic or market conditions 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) whether the Corporation intends to sell the security or more likely than not will be required to sell the security before its anticipated recovery. A summary of information management considered in evaluating debt and equity securities for OTTI at December 31, 2020 and 2019 is provided below. Debt Securities At December 31, 2020 and 2019, management performed an assessment for possible OTTI of the Corporation’s debt securities on an issue-by-issue basis, relying on information obtained from various sources, including publicly available financial data, ratings by external agencies, brokers and other sources. The extent of individual analysis applied to each security depended on the size of the Corporation’s investment, as well as management’s perception of the credit risk associated with each security. Based on the results of the assessment, management believes impairment of these debt securities at December 31, 2020 and 2019 to be temporary. Equity Securities C&N Bank is a member of the Federal Home Loan Bank of Pittsburgh (FHLB-Pittsburgh), which is one of 11 regional Federal Home Loan Banks. As a member, C&N Bank is required to purchase and maintain stock in FHLB-Pittsburgh. There is no active market for FHLB-Pittsburgh stock, and it must ordinarily be redeemed by FHLB-Pittsburgh in order to be liquidated. C&N Bank’s investment in FHLB-Pittsburgh stock, included in Other Assets in the consolidated balance sheets, was $9,720,000 at December 31, 2020 and $10,131,000 at December 31, 2019. The Corporation evaluated its holding of FHLB-Pittsburgh stock for impairment and deemed the stock to not be impaired at December 31, 2020 and December 31, 2019. In making this determination, management concluded that recovery of total outstanding par value, which equals the carrying value, is expected. The decision was based on review of financial information that FHLB-Pittsburgh has made publicly available. The Corporation’s marketable equity security, with a carrying value of $1,000,000 at December 31, 2020 and $979,000 at December 31, 2019, consisted exclusively of one mutual fund. There was no unrealized gain/loss on the mutual fund at December 31, 2020 and an unrealized loss of $21,000 at December 31, 2019. The decrease in the unrealized loss of $21,000 in 2020 and the decrease in the unrealized loss of $29,000 in 2019 are included in other noninterest income in the consolidated statements of income. There were no sales of equity securities in 2020 and 2019.

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