| Standard label: | Prepaid Expense, Noncurrent |
| Name: | us-gaap:PrepaidExpenseNoncurrent |
| Documentation: | Sum of the carrying amounts as of the balance sheet date of amounts paid in advance for expenses which will be charged against earnings in periods after one year or beyond the operating cycle, if longer. |
| 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:PrepaidExpenseNoncurrent |
| Label | Role | Language |
| Prepaid Expense, Noncurrent | http://www.xbrl.org/2003/role/label | en-US |
| Prepaid Expense, Noncurrent, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 210 10 S99 1 (SX 210.5-02.17) | http://fasb.org/us-gaap/role/ref/legacyRef | 210 |
| Part Of Roll Up: |
| us-gaap:AssetsNoncurrent |