| Standard label: | Deferred Compensation Arrangement with Individual, Compensation Expense |
| Name: | us-gaap:DeferredCompensationArrangementWithIndividualCompensationExpense |
| Documentation: | The compensation expense recognized during the period pertaining to the deferred compensation arrangement. |
| 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:DeferredCompensationArrangementWithIndividualCompensationExpense |
| Label | Role | Language |
| Deferred Compensation Arrangement with Individual, Compensation Expense | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 710 10 30 1 | http://fasb.org/us-gaap/role/ref/legacyRef | 710 |
| FASB Accounting Standards Codification 718 10 50 1 (b) | http://fasb.org/us-gaap/role/ref/legacyRef | 718 |