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Regulatory Requirements And Capital Ratios (Tables) | 12 Months Ended
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Dec. 31, 2017
Regulatory Capital Requirements [Abstract] |
Schedule Of Capital Amounts And Ratios |
December 31, 2017 | Actual |  | Minimum Required - Basel III Phase-In Schedule |  | Minimum Required - Basel III Fully Phased-In (*) |  | Required to be Considered Well Capitalized
Capital Amount |  | Ratio |  | Capital Amount |  | Ratio |  | Capital Amount |  | Ratio |  | Capital Amount |  | Ratio
CET 1 Capital |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
City Holding Company | $ | 430,154 |  |  | 15.1 | % |  | $ | 163,441 |  |  | 5.75 | % |  | $ | 198,972 |  |  | 7.0 | % |  | $ | 184,760 |  |  | 6.5 | %
City National Bank | 338,105 |  |  | 12.0 | % |  | 162,164 |  |  | 5.75 | % |  | 197,418 |  |  | 7.0 | % |  | 183,316 |  |  | 6.5 | %
Tier 1 Capital |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
City Holding Company | 446,154 |  |  | 15.7 | % |  | 206,078 |  |  | 7.25 | % |  | 241,609 |  |  | 8.5 | % |  | 227,397 |  |  | 8.0 | %
City National Bank | 338,105 |  |  | 12.0 | % |  | 204,468 |  |  | 7.25 | % |  | 239,721 |  |  | 8.5 | % |  | 225,620 |  |  | 8.0 | %
Total Capital |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
City Holding Company | 465,292 |  |  | 16.4 | % |  | 262,927 |  |  | 9.25 | % |  | 298,458 |  |  | 10.5 | % |  | 284,246 |  |  | 10.0 | %
City National Bank | 357,243 |  |  | 12.7 | % |  | 260,873 |  |  | 9.25 | % |  | 296,126 |  |  | 10.5 | % |  | 282,025 |  |  | 10.0 | %
Tier 1 Leverage Ratio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
City Holding Company | 446,154 |  |  | 11.0 | % |  | 161,834 |  |  | 4.00 | % |  | 161,834 |  |  | 4.0 | % |  | 202,293 |  |  | 5.0 | %
City National Bank | 338,105 |  |  | 8.5 | % |  | 159,625 |  |  | 4.00 | % |  | 159,625 |  |  | 4.0 | % |  | 199,531 |  |  | 5.0 | %
(*) Represents the minimum required capital levels as of January 1, 2019 when Basel III Capital Rules have been fully phased in.
December 31, 2016: | Actual |  | Minimum Required - Basel III Phase-In Schedule |  | Minimum Required - Basel III Fully Phased-In (*) |  | Required to be Considered Well Capitalized
Capital Amount |  | Ratio |  | Capital Amount |  | Ratio |  | Capital Amount |  | Ratio |  | Capital Amount |  | Ratio
CET 1 Capital |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
City Holding Company | $ | 371,677 |  |  | 13.3 | % |  | $ | 142,845 |  |  | 5.125 | % |  | $ | 195,105 |  |  | 7.0 | % |  | $ | 181,169 |  |  | 6.5 | %
City National Bank | 310,912 |  |  | 11.2 | % |  | 141,860 |  |  | 5.125 | % |  | 193,761 |  |  | 7.0 | % |  | 179,921 |  |  | 6.5 | %
Tier 1 Capital |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
City Holding Company | 387,677 |  |  | 13.9 | % |  | 184,653 |  |  | 6.625 | % |  | 236,913 |  |  | 8.5 | % |  | 222,977 |  |  | 8.0 | %
City National Bank | 318,872 |  |  | 11.5 | % |  | 183,381 |  |  | 6.625 | % |  | 235,281 |  |  | 8.5 | % |  | 221,441 |  |  | 8.0 | %
Total Capital |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
City Holding Company | 408,406 |  |  | 14.7 | % |  | 240,397 |  |  | 8.625 | % |  | 292,658 |  |  | 10.5 | % |  | 278,722 |  |  | 10.0 | %
City National Bank | 338,675 |  |  | 12.2 | % |  | 238,741 |  |  | 8.625 | % |  | 290,641 |  |  | 10.5 | % |  | 276,801 |  |  | 10.0 | %
Tier 1 Leverage Ratio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
City Holding Company | 387,677 |  |  | 10.1 | % |  | 153,864 |  |  | 4.000 | % |  | 153,864 |  |  | 4.0 | % |  | 192,330 |  |  | 5.0 | %
City National Bank | 318,872 |  |  | 8.3 | % |  | 153,088 |  |  | 4.000 | % |  | 153,088 |  |  | 4.0 | % |  | 191,359 |  |  | 5.0 | %
(*) Represents the minimum required capital levels as of January 1, 2019 when Basel III Capital Rules have been fully phased in.

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