| Standard label: | Deferred Tax Assets, Valuation Allowance, Noncurrent |
| Name: | us-gaap:DeferredTaxAssetsValuationAllowanceNoncurrent |
| Documentation: | Amount of valuation allowance of deferred tax asset attributable to deductible temporary differences and carryforwards, classified as noncurrent. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:DeferredTaxAssetsValuationAllowanceNoncurrent |
| Label | Role | Language |
| Deferred Tax Assets, Valuation Allowance, Noncurrent | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 740 10 50 2 (c) | http://fasb.org/us-gaap/role/ref/otherTransitionRef | 740 |
| FASB Accounting Standards Codification 740 10 45 4 | http://fasb.org/us-gaap/role/ref/otherTransitionRef | 740 |
| FASB Accounting Standards Codification 740 10 45 5 | http://fasb.org/us-gaap/role/ref/otherTransitionRef | 740 |