Significant Accounting Policies (Details)		12 Months Ended
	Mar. 11, 2021 USD ($)	Dec. 31, 2021 USD ($) reportingUnit segment	Dec. 31, 2020 USD ($)
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Number of operating segments | segment		1
Cash and cash equivalents		$ 190,081,000	$ 18,334,000
Restricted cash		1,500,000	0
Available-for-sale securities, accrued interest		300,000
Available-for-sale securities, credit losses recognized		0
Allowance for credit losses		0	0
Depreciation expense		$ 500,000	100,000
Number of reporting units | reportingUnit		1
Goodwill impairment loss		$ 0
Goodwill		4,204,000	0
Goodwill, accumulated impairment loss		0	0
Computing implementation costs capitalized		1,200,000
Computing implementation costs, amortization expense (less than)		49,000
Computing implementation costs, amount recognized			0
Asset impairment charges		0	0
Debt, net of current portion		35,000	87,000
Advertising expense		$ 800,000	200,000
Requisite service period		4 years
SBA PPP loan | Loans payable
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Principal amount			$ 400,000
Accrued interest paid	$ 3,000