| Standard label: | Restricted Investments |
| Name: | us-gaap:RestrictedInvestments |
| Documentation: | Investments which are not defined as or included in marketable (debt, equity, or other) securities whose use is restricted in whole or in part, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:RestrictedInvestments |
| Label | Role | Language |
| Restricted Investments | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |