| Standard label: | Share-based Payment Arrangement, Expense |
| Name: | us-gaap:AllocatedShareBasedCompensationExpense |
| Documentation: | Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. |
| 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:AllocatedShareBasedCompensationExpense |
| Label | Role | Language |
| Share-based Payment Arrangement, Expense | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 718 10 50 1 (b) | http://fasb.org/us-gaap/role/ref/legacyRef | 718 |
| FASB Accounting Standards Codification 718 10 S99 1 (SAB Topic 14.F) | http://fasb.org/us-gaap/role/ref/legacyRef | 718 |
| FASB Accounting Standards Codification 718 10 50 2 (h)(1)(i) | http://fasb.org/us-gaap/role/ref/legacyRef | 718 |
| Part Of Roll Up: |
| us-gaap:GeneralAndAdministrativeExpense |
| us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1 |