Basis of Presentation - Narrative (Details)	Feb. 27, 2021 USD ($)	Sep. 30, 2020 USD ($)	Jul. 13, 2020	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2018 USD ($)	Aug. 07, 2017 USD ($)
Line of Credit Facility [Line Items]
Restricted cash		$ 0		$ 922,000	$ 1,384,000	$ 656,000
First Lien Term Loan
Line of Credit Facility [Line Items]
Line of credit facility							$ 45,000,000.0
Fixed charge coverage ratio			1.00
First Lien Term Loan | Scenario, Forecast
Line of Credit Facility [Line Items]
Line of credit facility	$ 15,000,000.0
Revolving Facility
Line of Credit Facility [Line Items]
Line of credit facility		$ 30,000,000.0