cm:Member: us-gaap:FederalHomeLoanBankAdvancesMember
| Federal Home Loan Bank Advances [Member] |
| us-gaap:FederalHomeLoanBankAdvancesMember |
| Borrowings from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and also in times of liquidity shortages. The member institution executes a promissory note, which is generally collateralized by government securities to the Federal Reserve or loans. |
| cm:Member |
| [Member] (nonnum:domainItemType) |
| For Period (duration) |
| (no balance type) |
| true |
| us-gaap:FederalHomeLoanBankAdvancesMember |