| Standard label: | Demutualization Cost and Expense |
| Name: | us-gaap:DemutualizationCostAndExpense |
| Documentation: | The costs and expenses incurred pertaining to the reorganization process to convert a mutual entity to a stock company. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:DemutualizationCostAndExpense |
| Label | Role | Language |
| Demutualization Cost and Expense | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 944 805 45 3 | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |
| Part Of Roll Up: |
| us-gaap:OperatingExpenses |