Notes and Securities Payable - Seek Convertible Note, Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Sep. 25, 2020
Debt Instrument [Line Items]
Debt, carrying amount	$ 20,000
Seek | Convertible Debt
Debt Instrument [Line Items]
Principal amount			$ 20,000
Interest rate			8.00%
Debt, carrying amount	19,900	$ 19,900
Capitalized debt issuance cost	100
Unamortized debt issuance cost	100	100
Amortization of debt issuance costs and interest expense	$ 1,600	$ 400
Effective interest rate	8.20%	8.20%