Summary of Significant Accounting Policies - Contract Assets and Contract Liabilities (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2021 |
Sep. 30, 2020 |
Sep. 30, 2021 |
Sep. 30, 2020 |
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| Accounting Policies [Abstract] | ||||
| Revenue recognized included in contract liabilities | $ 0.3 | $ 0.2 | $ 0.8 | $ 0.7 |
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- References No definition available.
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- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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