| Standard label: | Shares, Issued |
| Name: | us-gaap:SharesIssued |
| Documentation: | Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury. |
| Object type: | cm:Concept |
| Data type: | Shares (xbrli:sharesItemType) |
| Period type: | As Of (instant) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:SharesIssued |
| Label | Role | Language |
| Shares, Issued | http://www.xbrl.org/2003/role/label | en-US |
| Shares, Issued, Ending Balance | http://www.xbrl.org/2003/role/periodEndLabel | en-US |
| Shares, Issued, Beginning Balance | http://www.xbrl.org/2003/role/periodStartLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 505 10 50 2 | http://fasb.org/us-gaap/role/ref/legacyRef | 505 |