| Standard label: | Deferred Tax Assets, Tax Deferred Expense |
| Name: | us-gaap:DeferredTaxAssetsTaxDeferredExpense |
| Documentation: | Amount, before allocation of valuation allowances, of deferred tax asset attributable to deductible differences from reserves and accruals, compensation and benefit costs, and other provisions, reserves, and allowances. |
| 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:DeferredTaxAssetsTaxDeferredExpense |
| Label | Role | Language |
| Deferred Tax Assets, Tax Deferred Expense | http://www.xbrl.org/2003/role/label | en-US |
| Deferred Tax Assets, Tax Deferred Expense, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 740 10 50 6 | http://fasb.org/us-gaap/role/ref/legacyRef | 740 |
| FASB Accounting Standards Codification 740 10 50 8 | http://fasb.org/us-gaap/role/ref/legacyRef | 740 |
| FASB Accounting Standards Codification 740 10 25 20 | http://fasb.org/us-gaap/role/ref/legacyRef | 740 |
| Part Of Roll Up: |
| us-gaap:DeferredTaxAssetsGross |