| Standard label: | Antidilutive Securities, Name [Domain] |
| Name: | us-gaap:AntidilutiveSecuritiesNameDomain |
| Documentation: | Incremental common shares attributable to securities that were not included in diluted earnings per share (EPS) because to do so would increase EPS amounts or decrease loss per share amounts for the period presented. |
| Object type: | cm:Member |
| Data type: | [Member] (nonnum:domainItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | true |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:AntidilutiveSecuritiesNameDomain |
| Label | Role | Language |
| Antidilutive Securities, Name [Domain] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 260 10 50 1 (c) | http://fasb.org/us-gaap/role/ref/legacyRef | 260 |