| Standard label: | Share-based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Exercise Price |
| Name: | us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 |
| Documentation: | The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices. |
| Object type: | cm:Concept |
| Data type: | Share (num:perShareItemType) |
| Period type: | As Of (instant) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 |
| Label | Role | Language |
| Share-based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Exercise Price | http://www.xbrl.org/2003/role/label | en-US |
| Share-based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Exercise Price, Ending Balance | http://www.xbrl.org/2003/role/periodEndLabel | en-US |
| Share-based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Exercise Price, Beginning Balance | http://www.xbrl.org/2003/role/periodStartLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 718 10 50 2 (c)(1)(i)-(ii) | http://fasb.org/us-gaap/role/ref/legacyRef | 718 |