| Standard label: | Derivative Liability, Fair Value, Gross Liability |
| Name: | us-gaap:DerivativeFairValueOfDerivativeLiability |
| Documentation: | Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. |
| 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:DerivativeFairValueOfDerivativeLiability |
| Label | Role | Language |
| Derivative Liability, Fair Value, Gross Liability | http://www.xbrl.org/2003/role/label | en-US |
| Derivative Liability, Fair Value, Gross Liability, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 210 20 50 3 (a) | http://fasb.org/us-gaap/role/ref/legacyRef | 210 |
| FASB Accounting Standards Codification 210 20 55 7 | http://fasb.org/us-gaap/role/ref/legacyRef | 210 |
| FASB Accounting Standards Codification 815 10 50 4B (a),(c) | http://fasb.org/us-gaap/role/ref/legacyRef | 815 |
| FASB Accounting Standards Codification 860 20 50 4D (c)(2) | http://fasb.org/us-gaap/role/ref/legacyRef | 860 |