| Standard label: | Debt Instrument, Convertible, Carrying Amount of Equity Component |
| Name: | us-gaap:DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent |
| Documentation: | The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent |
| Label | Role | Language |
| Debt Instrument, Convertible, Carrying Amount of Equity Component | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 470 20 50 4 (a) | http://fasb.org/us-gaap/role/ref/legacyRef | 470 |