Basis of Presentation and Summary of Significant Accounting Policies - Concentrations of credit risk (Details) - USD ($) $ in Millions |
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Basis of Presentation and Summary of Significant Accounting Policies | ||
| Deposits | $ 29.0 | $ 7.5 |
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- References No definition available.
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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