Restricted Cash	9 Months Ended
Sep. 30, 2021
Restricted Cash And Cash Equivalents [Abstract]
Restricted Cash	6. Restricted cash As of September 30, 2021 and December 31, 2020, the Company maintained standby letters of credit of $8.8 million and $2.1 million, respectively, which are collateralized with a bank account at a financial institution in accordance with the applicable lease agreements.

The entire disclosure for assets that are restricted in their use, generally by contractual agreements or regulatory requirements. This would include, but not limited to, a description of the restricted assets and the terms of the restriction.

No definition available.

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