| Standard label: | Restricted Cash, Noncurrent |
| Name: | us-gaap:RestrictedCashNoncurrent |
| Documentation: | Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. |
| 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:RestrictedCashNoncurrent |
| Label | Role | Language |
| Restricted Cash, Noncurrent | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 210 10 S99 1 (SX 210.5-02(17)) | http://www.xbrl.org/2009/role/commonPracticeRef | 210 |
| FASB Accounting Standards Codification 210 10 45 4 (a) | http://www.xbrl.org/2009/role/commonPracticeRef | 210 |
| FASB Accounting Standards Codification 230 10 50 8 | http://www.xbrl.org/2009/role/commonPracticeRef | 230 |
| FASB Accounting Standards Codification 954 210 45 5 | http://www.xbrl.org/2003/role/disclosureRef | 954 |
| Part Of Roll Up: |
| us-gaap:RestrictedCashAndCashEquivalentsNoncurrent |