| Standard label: | Legal Fees |
| Name: | us-gaap:LegalFees |
| Documentation: | The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings. |
| 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:LegalFees |
| Label | Role | Language |
| Legal Fees | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 220 10 S99 2 (SX 210.5-03.3) | http://fasb.org/us-gaap/role/ref/legacyRef | 220 |
| Part Of Roll Up: |
| us-gaap:LitigationSettlementExpense |