| Standard label: | Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent |
| Name: | us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate |
| Documentation: | Percentage of domestic federal statutory tax rate applicable to pretax income (loss). |
| Object type: | cm:Concept |
| Data type: | Percent (num:percentItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate |
| Label | Role | Language |
| Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 740 10 S99 1 (SAB TOPIC 6.I) | http://fasb.org/us-gaap/role/ref/legacyRef | 740 |
| FASB Accounting Standards Codification 740 10 50 12 | http://fasb.org/us-gaap/role/ref/legacyRef | 740 |
| FASB Accounting Standards Codification 740 10 50 13 | http://fasb.org/us-gaap/role/ref/legacyRef | 740 |
| Part Of Roll Up: |
| us-gaap:EffectiveIncomeTaxRateContinuingOperations |