| Standard label: | Long-term Debt, Contingent Payment of Principal or Interest | 
| Name: | us-gaap:LongTermDebtContingentPaymentOfPrincipalOrInterest | 
| Documentation: | Description of conditions, facts and circumstances that would trigger a payment of principal or interest which was not otherwise immediately due and payable. | 
| 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:LongTermDebtContingentPaymentOfPrincipalOrInterest | 
| Label | Role | Language | 
| Long-term Debt, Contingent Payment of Principal or Interest | http://www.xbrl.org/2003/role/label | en-US | 
| Reference | Role | Topic | 
| FASB Accounting Standards Codification 210 10 S99 1 (SX 210.5-02.22(a)(3)) | http://www.xbrl.org/2003/role/disclosureRef | 210 |