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Investments | 12 Months Ended
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Dec. 31, 2022
Investments [Abstract] |
Investments | INVESTMENTS The aggregate carrying and approximate fair values of investment securities follow (in thousands). Fair values are based on quoted market prices, where available. If quoted market prices are not available, fair values are based on quoted market prices of comparable financial instruments.
| December 31, 2022 | December 31, 2021
| Amortized Cost | Gross Unrealized Gains | Gross Unrealized Losses | Estimated Fair Value | Amortized Cost | Gross Unrealized Gains | Gross Unrealized Losses | Estimated Fair Value
Securities available-for-sale: |  |  |  |  |  |  |  |
Obligations of states and |  |  |  |  |  |  |  |
political subdivisions | 292,293 |  | 346 |  | 24,324 |  | 268,315 |  | 263,809 |  | 8,622 |  | 215 |  | 272,216 |
Mortgage-backed securities: |  |  |  |  |  |  |  |
U.S. government agencies | 1,342,666 |  | 299 |  | 140,686 |  | 1,202,279 |  | 1,080,381 |  | 18,739 |  | 4,809 |  | 1,094,311 |
Private label | 7,695 |  | — |  | 464 |  | 7,231 |  | 8,555 |  | 553 |  | — |  | 9,108 |
Trust preferred securities | 4,590 |  | — |  | 762 |  | 3,828 |  | 4,570 |  | — |  | 367 |  | 4,203 |
Corporate securities | 26,620 |  | — |  | 2,753 |  | 23,867 |  | 27,292 |  | 1,047 |  | 12 |  | 28,327 |
Total Securities |  |  |  |  |  |  |  |
Available-for-Sale | $ | 1,673,864 |  | $ | 645 |  | $ | 168,989 |  | $ | 1,505,520 |  | $ | 1,384,607 |  | $ | 28,961 |  | $ | 5,403 |  | $ | 1,408,165 |
The Company's other investment securities include marketable and non-marketable equity securities. At December 31, 2022 and 2021, the Company held $7.6 million and $9.2 million, respectively, in marketable equity securities, respectively. Changes in the fair value of the marketable equity securities are recorded in "unrealized (losses) gains recognized on equity securities still held" in the consolidated statements of income. The C ompany's non-marketable securities consist of securities with limited marketability, such as stock in the Federal Reserve Bank ("FRB") or the Federal Home Loan Bank ("FHLB"). At December 31, 2022 and 2021, the Company held $15.5 million and $15.3 million, respectively, in non-marketable equity securities. These securities are carried at cost due to the restrictions placed on their transferability. At December 31, 2022 and 2021, the Company held $0.7 million and $1.0 million, respectively, in certificates of deposits held for investment. The majority of the Company’s investment securities are mortgage-backed securities. These securities are collateralized by both residential and commercial properties. The mortgage-backed securities in which the Company has invested are predominantly issued by government-sponsored agencies such as Fannie Mae (“FNMA”), Freddie Mac (“FHLMC”) and Ginnie Mae (“GNMA”). At December 31, 2022 and 2021, there were no securities of any non-governmental issuer whose aggregate carrying value or estimated fair value exceeded 10% of shareholders' equity. Certain investment securities owned by the Company were in an unrealized loss position (i.e., amortized cost basis exceeded the estimated fair value of the securities) as of December 31, 2022 and 2021. The following table shows the gross unrealized losses and fair value of the Company’s investments aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (in thousands):
| December 31, 2022
| Less Than Twelve Months | Twelve Months or Greater | Total
| Estimated Fair Value | Unrealized Loss | Estimated Fair Value | Unrealized Loss | Estimated Fair Value | Unrealized Loss
Securities available-for-sale: |  |  |  |  |  |
Obligations of states and political subdivisions | $ | 203,173 |  | $ | 21,929 |  | $ | 13,359 |  | $ | 2,395 |  | $ | 216,532 |  | $ | 24,324 |
Mortgage-backed securities: |  |  |  |  |  |
U.S. Government agencies | 533,611 |  | 50,268 |  | 376,778 |  | 90,418 |  | 910,389 |  | 140,686 |
Private Label | 7,126 |  | 464 |  | — |  | — |  | 7,126 |  | 464 |
Trust preferred securities | — |  | — |  | 3,828 |  | 762 |  | 3,828 |  | 762 |
Corporate securities | 22,972 |  | 2,648 |  | 895 |  | 105 |  | 23,867 |  | 2,753 |
Total available-for-sale | $ | 766,882 |  | $ | 75,309 |  | $ | 394,860 |  | $ | 93,680 |  | $ | 1,161,742 |  | $ | 168,989 |
| December 31, 2021
| Less Than Twelve Months | Twelve Months or Greater | Total
| Estimated Fair Value | Unrealized Loss | Estimated Fair Value | Unrealized Loss | Estimated Fair Value | Unrealized Loss
Securities available-for-sale: |  |  |  |  |  |
Obligations of states and political subdivisions | $ | 13,277 |  | $ | 152 |  | $ | 2,420 |  | $ | 63 |  | $ | 15,697 |  | $ | 215 |
Mortgage-backed securities: |  |  |  |  |  |
U.S. Government agencies | 521,407 |  | 4,802 |  | 23,295 |  | 7 |  | 544,702 |  | 4,809 |
Trust preferred securities | — |  | — |  | 4,203 |  | 367 |  | 4,203 |  | 367 |
Corporate securities | 988 |  | 12 |  | — |  | — |  | 988 |  | 12 |
Total available-for-sale | $ | 535,672 |  | $ | 4,966 |  | $ | 29,918 |  | $ | 437 |  | $ | 565,590 |  | $ | 5,403 |
As of December 31, 2022, management does not intend to sell any securities that are in an unrealized loss position and it is not more than likely that it will be required to sell the securities before the recovery of the amortized cost basis. The unrealized losses on debt securities are primarily the result of interest rate changes, credit spread fluctuations on agency-issued mortgage related securities, general financial market uncertainty and unprecedented market volatility. These conditions should not prohibit the Company from receiving its contractual principal and interest payments on its debt securities. The fair value is expected to recover as the securities approach their maturity date or repricing date. As of December 31, 2022, management believes the unrealized losses detailed in the table above are temporary and no allowance for credit losses for available-for-sale securities has been recognized in the Company’s consolidated income statement. Should the impairment of any of these securities become other-than-temporary, the cost basis of the investment will be reduced and the resulting loss will be recognized in net income in the period the other-than-temporary impairment is identified, while any noncredit loss will be recognized in other comprehensive (loss) income. During the years ended December 31, 2022, 2021 and 2020, the Company had no credit-related net investment impairment losses. The amortized cost and estimated fair value of debt securities at December 31, 2022, by contractual maturity, is shown in the following table (in thousands). Expected maturities will differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties. Mortgage-backed securities have been allocated to their respective maturity groupings based on their contractual maturity.
| Cost | Estimated Fair Value
Securities Available-for-Sale |  |
Due in one year or less | $ | 2,905 |  | $ | 2,896 |
Due after one year through five years | 50,712 |  | 48,401 |
Due after five years through ten years | 530,300 |  | 490,723 |
Due after ten years | 1,089,947 |  | 963,500 |
| $ | 1,673,864 |  | $ | 1,505,520 |
Gross gains and gross losses realized by the Company from investment security transactions are summarized in the table below (in thousands):
| For the year ended December 31,
| 2022 | 2021 | 2020
Gross unrealized gains recognized on equity securities still held | $ | 38 |  | $ | 547 |  | $ | 223 |
Gross unrealized losses recognized on equity securities still held | (1,623) |  | (43) |  | (1,086) |
Net unrealized (losses) gains recognized on equity securities still held | $ | (1,585) |  | $ | 504 |  | $ | (863) |
Gross realized gains | $ | 4 |  | $ | 312 |  | $ | 139 |
Gross realized losses | — |  | — |  | (77) |
Net realized investment security gains | $ | 4 |  | $ | 312 |  | $ | 62 |
During January 2020, the Company sold the entirety of its Visa Inc. Class B common shares (86,605) in a cash transaction which resulted in a pre-tax gain of $17.8 million. The carrying value of the Visa Class B shares on the Company’s balance sheet was $0, as City National had no historical cost basis in the shares. The carrying value of securities pledged to secure public deposits and for other purposes as required or permitted by law approximated $886 million and $711 million at December 31, 2022 and 2021, respectively.

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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 https://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 https://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 https://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 https://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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