| Standard label: | Unearned ESOP Shares |
| Name: | us-gaap:UnearnedESOPShares |
| Documentation: | Fair value of unearned shares for all classes of common stock and nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by an employee stock ownership plan (ESOP). Includes the sale of shares or the issuance treasury shares to an ESOP. |
| 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:UnearnedESOPShares |
| Label | Role | Language |
| Unearned ESOP Shares | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 718 40 50 1 (e) | http://fasb.org/us-gaap/role/ref/legacyRef | 718 |
| FASB Accounting Standards Codification 718 40 45 2 | http://fasb.org/us-gaap/role/ref/legacyRef | 718 |
| Part Of Roll Up: |
| us-gaap:StockholdersEquity |