| Standard label: | Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants |
| Name: | us-gaap:IncrementalCommonSharesAttributableToCallOptionsAndWarrants |
| Documentation: | Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of call options and warrants using the treasury stock method. |
| Object type: | cm:Concept |
| Data type: | Shares (xbrli:sharesItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:IncrementalCommonSharesAttributableToCallOptionsAndWarrants |
| Label | Role | Language |
| Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 260 10 50 1 (a) | http://fasb.org/us-gaap/role/ref/legacyRef | 260 |
| Part Of Roll Up: |
| us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment |