Summary of Significant Accounting Policies (Revenue Recognition) (Details) |
Dec. 31, 2020 |
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| United States Government | |
| Lessor, Lease, Description [Line Items] | |
| Renewal term | 1 year |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Term of lessor's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Details
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