| Standard label: | Cash Equivalents [Member] |
| Name: | us-gaap:CashEquivalentsMember |
| Documentation: | Short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. |
| Object type: | cm:Member |
| Data type: | [Member] (nonnum:domainItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | true |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:CashEquivalentsMember |
| Label | Role | Language |
| Cash Equivalents [Member] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 210 10 S99 1 (SX 210.5-02(1)) | http://fasb.org/us-gaap/role/ref/legacyRef | 210 |