| Standard label: | Schedule of Gain (Loss) on Securities [Table] |
| Name: | us-gaap:ScheduleOfGainLossOnInvestmentsTable |
| Documentation: | Disclosure of information about realized and unrealized gain (loss) on investment in security. |
| Object type: | cm:Table |
| Data type: | Text/String (xbrli:stringItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | true |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:ScheduleOfGainLossOnInvestmentsTable |
| Label | Role | Language |
| Schedule of Gain (Loss) on Securities [Table] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |