Property and Equipment. net - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Depreciation expense			$ 2,108,000	$ 931,000
Capitalized implementation cost, net	$ 631,000		$ 631,000
Capitalized implementation cost, amortization method			The capitalized costs are amortized on a straight-line basis over the non-cancelable contract terms, generally three years.
Capitalized implementation cost, amortization period	3 years		3 years
Deposits and Other Assets
Property Plant And Equipment [Line Items]
Capitalized implementation cost, current	$ 57,000		$ 57,000		$ 0
Prepaid Expenses and Other Current Assets
Property Plant And Equipment [Line Items]
Capitalized implementation cost, current	284,000		284,000		228,000
Accounting Standards Update 2016-02 | Revision of Prior Period, Accounting Standards Update, Adjustment
Property Plant And Equipment [Line Items]
Tenant improvement reclassified to other assets					$ 1,556,000
SG&A Expenses
Property Plant And Equipment [Line Items]
Depreciation expense	648,000	$ 271,000	1,633,000	688,000
Capitalized implementation cost, amortization	67,000	27,000	173,000	66,000
Cost of Goods Sold
Property Plant And Equipment [Line Items]
Depreciation expense	$ 172,000	$ 87,000	$ 475,000	$ 243,000