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Commitments and Contingencies - Additional Information (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted funds		$ 21,028,000
Percent of tax savings to be paid	85.00%
Collateral with financial institutions
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted funds	$ 11,662,000	4,743,000
Letter of Credit | Line of Credit
Restricted Cash and Cash Equivalents Items [Line Items]
Maximum borrowing capacity	15,400,000	8,300,000
Letter of Credit | Line of Credit | Restricted Cash For Letters Of Credit
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted funds	15,400,000	8,300,000
Letter of Credit | Line of Credit | Collateral with financial institutions
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted funds	$ 15,400,000	$ 8,300,000

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