Notes Payable - Summary of Long Term Debt (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020	Nov. 19, 2020
Short-term Debt
Notes payable, net of discount	$ 0	$ 19,654,000
Term Loan A
Short-term Debt
Principal amount of long-term debt	0	20,000,000	$ 20,000,000
Less: Current portion of long-term debt	0	0
Notes payable, net of discount	0	20,000,000
Final payment fee	0	1,000,000
Debt discount, net of accretion	0	(1,346,000)
Long-term debt, net of discount and current portion	$ 0	$ 19,654,000