| Standard label: | Federal Home Loan Bank, Advances, Maturities Summary, Fixed Rate |
| Name: | us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryByInterestRateTypeFixedRate |
| Documentation: | Amount of Federal Home Loan Bank (FHLB) advances which have fixed interest. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryByInterestRateTypeFixedRate |
| Label | Role | Language |
| Federal Home Loan Bank, Advances, Maturities Summary, Fixed Rate | http://www.xbrl.org/2003/role/label | en-US |
| Federal Home Loan Bank, Advances, Maturities Summary, Fixed Rate, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 470 10 50 1 | http://fasb.org/us-gaap/role/ref/legacyRef | 470 |
| FASB Accounting Standards Codification 942 470 45 1 | http://fasb.org/us-gaap/role/ref/legacyRef | 942 |
| FASB Accounting Standards Codification 942 470 50 3 | http://fasb.org/us-gaap/role/ref/legacyRef | 942 |