| Standard label: | Effect of Fourth Quarter Events [Table] |
| Name: | us-gaap:ScheduleOfEffectOfFourthQuarterEventsTable |
| Documentation: | Disclosure of information about transactions recognized in the fourth quarter, including, but not limited to, disposals of components of an entity, unusual or infrequently occurring items, or both, effect from changes in accounting estimates and effect of year-end adjustments. |
| Object type: | cm:Table |
| Data type: | Text/String (xbrli:stringItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | true |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:ScheduleOfEffectOfFourthQuarterEventsTable |
| Label | Role | Language |
| Effect of Fourth Quarter Events [Table] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 270 10 50 2 | http://fasb.org/us-gaap/role/ref/legacyRef | 270 |