| Standard label: | Class of Warrant or Right, Outstanding | 
| Name: | us-gaap:ClassOfWarrantOrRightOutstanding | 
| Documentation: | Number of warrants or rights outstanding. | 
| Object type: | cm:Concept | 
| Data type: | Shares (xbrli:sharesItemType) | 
| Period type: | As Of (instant) | 
| Balance type: | (no balance type) | 
| Abstract: | false | 
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:ClassOfWarrantOrRightOutstanding | 
| Label | Role | Language | 
| Class of Warrant or Right, Outstanding | http://www.xbrl.org/2003/role/label | en-US | 
| Reference | Role | Topic | 
| FASB Accounting Standards Codification 235 10 S99 1 (SX 210.4-08.(i)) | http://fasb.org/us-gaap/role/ref/legacyRef | 235 |