| Standard label: | Own-share Lending Arrangement, Reasons | 
| Name: | us-gaap:OwnshareLendingArrangementReasons | 
| Documentation: | Describes the entity's reasons for entering into an own-share lending arrangement, in contemplation of a convertible debt offering or other financing. | 
| 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:OwnshareLendingArrangementReasons | 
| Label | Role | Language | 
| Own-share Lending Arrangement, Reasons | http://www.xbrl.org/2003/role/label | en-US | 
| Reference | Role | Topic | 
| FASB Accounting Standards Codification 470 20 50 2A (c) | http://fasb.org/us-gaap/role/ref/legacyRef | 470 |