| Standard label: | Open Tax Year |
| Name: | us-gaap:OpenTaxYear |
| Documentation: | Tax year that remains open to examination under enacted tax laws, in CCYY format. |
| Object type: | cm:Concept |
| Data type: | us-types:gYearListItemType |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:OpenTaxYear |
| Label | Role | Language |
| Open Tax Year | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 740 10 50 15 (e) | http://fasb.org/us-gaap/role/ref/legacyRef | 740 |