| Standard label: | Tax Credit Carryforward, Amount |
| Name: | us-gaap:TaxCreditCarryforwardAmount |
| Documentation: | The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. |
| 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:TaxCreditCarryforwardAmount |
| Label | Role | Language |
| Tax Credit Carryforward, Amount | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 740 10 50 3 (a) | http://fasb.org/us-gaap/role/ref/legacyRef | 740 |