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Regulatory Requirements And Capital Ratios (Schedule Of Capital Amounts And Ratios) (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Parent Company |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Common equity tier one capital amount | $ 371,677 | $ 345,620
Common equity tier one ratio | 13.30% | 13.70%
Common equity tier one, minimum capital required basel III phase in schedule, capital amount | $ 142,845 | $ 113,919
Common equity tier one captial ratio, minimum capital required basel III phase in schedule | 5.125% | 4.50%
Common equity tier one capital required, minimum capital required basel III fully phased in | $ 195,105 | $ 177,207
Common equity tier one capital ratio, minimum capital required basel III fully phased in | 7.00% | 7.00%
Common equity tier one capital required to be well capitalized | $ 181,169 | $ 164,549
Common equity tier one capital ratio required to be well capitalized | 6.50% | 6.50%
Total Capital, Amount | $ 408,406 | $ 382,180
Total Capital, Ratio | 14.70% | 15.10%
Total Capital, minimum capital required basel III phase in schedule | $ 240,397 | $ 202,522
Total Capital Ratio, minimum capital required basel III phase in schedule | 8.625% | 8.00%
Total Capital, minimum capital required basel III fully phased in | $ 292,658 | $ 265,810
Total Capital Ratio, minimum capital required basel III fully phased in | 10.50% | 10.50%
Capital Required to be Well Capitalized | $ 278,722 | $ 253,152
Total Capital, Minimum Ratio | 10.00% | 10.00%
Tier I Capital, Amount | $ 387,677 | $ 361,620
Tier one risk based capital, minimum capital required basel III phase in schedule | $ 184,653 | $ 151,891
Tier one risk based capital ratio minimum capital required basel III phase in schedule | 6.625% | 6.00%
Tier one risk based capital, minimum capital required basel III fully phased in | $ 236,913 | $ 215,180
Tier one risk based capital ratio, minimum capital required basel III fully phased in | 8.50% | 8.50%
Tier One Risk Based Capital Required to be Well Capitalized | $ 222,977 | $ 202,522
Tier I Capital, Ratio | 13.90% | 14.30%
Tier I Capital, Well Capitalized Ratio | 8.00% | 8.00%
Tier 1 Capital, Average Assets, Amount | $ 387,677 | $ 361,620
Tier I Capital, Average Assets, Ratio | 10.10% | 10.20%
Tier One Leverage Capital, minimum capital required basel III phase in schedule | $ 153,864 | $ 142,521
Tier One Leverage Ratio, minimum capital required basel III phase in schedule | 4.00% | 4.00%
Tier One Leverage Capital, minimum capital required basel III fully phased in | $ 153,864 | $ 142,521
Tier One Leverage Ratio, minimum capital required basel III fully phased in | 4.00% | 4.00%
Tier One Leverage Capital Required to be Well Capitalized | $ 192,330 | $ 178,151
Tier 1 Capital, Average Assets, Well Capitalized Ratio | 5.00% | 5.00%
City National |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Common equity tier one capital amount | $ 310,912 | $ 264,812
Common equity tier one ratio | 11.20% | 10.50%
Common equity tier one, minimum capital required basel III phase in schedule, capital amount | $ 141,860 | $ 113,209
Common equity tier one captial ratio, minimum capital required basel III phase in schedule | 5.125% | 4.50%
Common equity tier one capital required, minimum capital required basel III fully phased in | $ 193,761 | $ 176,103
Common equity tier one capital ratio, minimum capital required basel III fully phased in | 7.00% | 7.00%
Common equity tier one capital required to be well capitalized | $ 179,921 | $ 163,524
Common equity tier one capital ratio required to be well capitalized | 6.50% | 6.50%
Total Capital, Amount | $ 338,675 | $ 308,804
Total Capital, Ratio | 12.20% | 12.30%
Total Capital, minimum capital required basel III phase in schedule | $ 238,741 | $ 201,260
Total Capital Ratio, minimum capital required basel III phase in schedule | 8.625% | 8.00%
Total Capital, minimum capital required basel III fully phased in | $ 290,641 | $ 264,154
Total Capital Ratio, minimum capital required basel III fully phased in | 10.50% | 10.50%
Capital Required to be Well Capitalized | $ 276,801 | $ 251,575
Total Capital, Minimum Ratio | 10.00% | 10.00%
Tier I Capital, Amount | $ 318,872 | $ 288,752
Tier one risk based capital, minimum capital required basel III phase in schedule | $ 183,381 | $ 150,945
Tier one risk based capital ratio minimum capital required basel III phase in schedule | 6.625% | 6.00%
Tier one risk based capital, minimum capital required basel III fully phased in | $ 235,281 | $ 213,839
Tier one risk based capital ratio, minimum capital required basel III fully phased in | 8.50% | 8.50%
Tier One Risk Based Capital Required to be Well Capitalized | $ 221,441 | $ 201,260
Tier I Capital, Ratio | 11.50% | 11.50%
Tier I Capital, Well Capitalized Ratio | 8.00% | 8.00%
Tier 1 Capital, Average Assets, Amount | $ 318,872 | $ 288,752
Tier I Capital, Average Assets, Ratio | 8.30% | 8.10%
Tier One Leverage Capital, minimum capital required basel III phase in schedule | $ 153,088 | $ 141,874
Tier One Leverage Ratio, minimum capital required basel III phase in schedule | 4.00% | 4.00%
Tier One Leverage Capital, minimum capital required basel III fully phased in | $ 153,088 | $ 141,874
Tier One Leverage Ratio, minimum capital required basel III fully phased in | 4.00% | 4.00%
Tier One Leverage Capital Required to be Well Capitalized | $ 191,359 | $ 177,343
Tier 1 Capital, Average Assets, Well Capitalized Ratio | 5.00% | 5.00%

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