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Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Impairments of long-lived assets | $ 0 | $ 0
Cash and Cash Equivalents [Line Items] |  |
Cash and cash equivalents | 92,268,000 | 157,898,000
Operating Account |  |
Cash and Cash Equivalents [Line Items] |  |
Cash and cash equivalents | 14,600,000 | 2,700,000
Money Market Funds |  |
Cash and Cash Equivalents [Line Items] |  |
Cash and cash equivalents | $ 77,700,000 | 80,200,000
Government Obligations |  |
Cash and Cash Equivalents [Line Items] |  |
Cash and cash equivalents |  | $ 75,000,000.0

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