| Standard label: | Investment Owned, Restricted Investment [Fixed List] |
| Name: | us-gaap:InvestmentOwnedRestrictedInvestmentFlag |
| Documentation: | Indicates if the investment is a restricted security. This flag has three options: "Restricted Investment", "Restricted Investment Exempt from Registration" and "Restricted Investment Not Exempt from Registration". |
| Object type: | cm:Concept |
| Data type: | us-types:restrictedInvestmentItemType |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:InvestmentOwnedRestrictedInvestmentFlag |
| Label | Role | Language |
| Investment Owned, Restricted Investment [Fixed List] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 946 320 S99 1 (SX 210.12-12.6) | http://fasb.org/us-gaap/role/ref/legacyRef | 946 |
| FASB Accounting Standards Codification 946 320 S99 4 (SX 210.12-12C.9) | http://fasb.org/us-gaap/role/ref/legacyRef | 946 |
| FASB Accounting Standards Codification 946 320 S99 6 (SX 210.12-14(4)(a)) | http://fasb.org/us-gaap/role/ref/legacyRef | 946 |