| Standard label: | Deferred Tax Liability Not Recognized, Description of Temporary Difference, Bad Debt Reserve for Tax Purposes of Qualified Lender |
| Name: | us-gaap:DeferredTaxLiabilityNotRecognizedDescriptionOfTemporaryDifferenceBadDebtReserveForTaxPurposesOfQualifiedLender |
| Documentation: | Description of temporary difference for which a deferred tax liability has not been recognized because of the exceptions to comprehensive recognition of deferred taxes related to bad debt reserves for tax purposes of a qualified lender. |
| Object type: | cm:Concept |
| Data type: | Text/String (xbrli:stringItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:DeferredTaxLiabilityNotRecognizedDescriptionOfTemporaryDifferenceBadDebtReserveForTaxPurposesOfQualifiedLender |
| Label | Role | Language |
| Deferred Tax Liability Not Recognized, Description of Temporary Difference, Bad Debt Reserve for Tax Purposes of Qualified Lender | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 740 30 50 2 (a) | http://fasb.org/us-gaap/role/ref/legacyRef | 740 |
| FASB Accounting Standards Codification 942 740 50 1 (a) | http://fasb.org/us-gaap/role/ref/legacyRef | 942 |
| FASB Accounting Standards Codification 944 740 50 1 (a) | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |