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Commitments and Contingencies - Additional Information (Details) - QL Holdings LLC and Subsidiaries - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Lessee Lease Description [Line Items]          
Deferred rent liability $ 400,000   $ 400,000   $ 400,000
Rental expense 100,000 $ 500,000 100,000 $ 400,000  
Contingency reserves for litigation liabilities $ 0   $ 0   $ 0