cm:Level1TextBlock: us-gaap:RestrictionsOnDividendsLoansAndAdvancesTextBlock
| Restrictions on Dividends, Loans and Advances [Text Block] |
| us-gaap:RestrictionsOnDividendsLoansAndAdvancesTextBlock |
| The entire disclosure for a banking or savings institution's compliance during the year with (a) federal and state laws and regulations relative to dividend restrictions and (b) federal laws and regulations relative to insider loans. |
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| Text Block (HTML) (nonnum:textBlockItemType) |
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| (no balance type) |
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| us-gaap:RestrictionsOnDividendsLoansAndAdvancesTextBlock |
| RestrictionsonDividendsLoansAndAdvances |