| Standard label: | Proceeds from Maturities, Prepayments and Calls of Long-term Investments |
| Name: | us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfLongtermInvestments |
| Documentation: | The cash inflow from maturities, prepayments, calls and collections of all investments, including securities and other assets, having ready marketability and intended by management to be liquidated, if necessary, beyond the current operating cycle. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfLongtermInvestments |
| Label | Role | Language |
| Proceeds from Maturities, Prepayments and Calls of Long-term Investments | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 230 10 45 12 | http://www.xbrl.org/2009/role/commonPracticeRef | 230 |