Debt - Ares Term Loan - Additional Information (Details) - USD ($)			1 Months Ended		3 Months Ended		9 Months Ended
	Oct. 08, 2021	Dec. 30, 2019	Jul. 31, 2021	Jan. 31, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Debt Instrument [Line Items]
Cash and cash equivalents					$ 6,128,000		$ 6,128,000		$ 17,359,000
Ares Term Loan
Debt Instrument [Line Items]
Debt financing					$ 32,846,000		$ 32,846,000		$ 31,878,000
Debt instrument advanced at closing of agreement tranche A		$ 30,000,000.0
Debt instrument advanced at closing of agreement tranche B		$ 10,000,000.0
Debt instrument advance, closing of tranche agreement date		Dec. 31, 2020
Minimum amount conditioned upon achieving in net revenues		$ 30,000,000.0
Debt instrument advance, closing of tranche agreement period prior to closing		12 months
Debt instrument, term							3 years
Debt instrument, maturity date							Dec. 30, 2022
Debt instrument effective interest rate					24.90%		24.90%		22.70%
Prepayment premium earned percentage on principal		30.00%
Payments of loan costs							$ 1,400,000
Interest Expense related to debt discount , debt issuance costs and exit fees					$ 800,000	$ 500,000	1,900,000	$ 1,400,000
Interest expense on debt					1,700,000	$ 1,400,000	4,700,000	$ 4,100,000
Estimated fair value of aggregate outstanding derivative instrument					2,200,000		2,200,000		$ 4,500,000
Ares Agreement | Ares Term Loan
Debt Instrument [Line Items]
Cash and cash equivalents					5,000,000.0		$ 5,000,000.0
Gain (loss) on debt modification			$ 0	$ 0
Debt instrument fixed exit fee percentage							6.25%
Derivative liability, fair value					$ 4,300,000		$ 4,300,000
CIBC Agreement | Subsequent Event
Debt Instrument [Line Items]
Debt financing	$ 40,000,000.0
Proceeds from repayments of debt	$ 35,500,000
Minimum | Ares Term Loan
Debt Instrument [Line Items]
Repayment loan percentage							4.00%
Maximum | Ares Term Loan
Debt Instrument [Line Items]
Debt financing		$ 40,000,000.0
Repayment loan percentage							10.00%
Payment in Kind (PIK) Note | Ares Term Loan
Debt Instrument [Line Items]
Debt instrument, periodic payment							$ 2,900,000
Payment in Kind (PIK) Note | Maximum | Ares Term Loan
Debt Instrument [Line Items]
Debt instruments accrued interest rate percentage		50.00%
Base Rate | Ares Term Loan
Debt Instrument [Line Items]
Debt instrument, interest rate terms							Borrowings under the Ares Agreement, including the Ares Loan, bear interest at either the ABR plus 8.5% per annum or the Eurodollar Rate plus 9.5% per annum, as applicable. The ABR equals the greatest of (a) 3.0%, (b) the prime rate, (c) the federal funds rate plus 0.5% and (d) the three-month Eurodollar Rate plus 1.0%. The Eurodollar Rate equals the greater of (a) 2.0% and (b) the rate per annum appearing on Bloomberg Professional Service Page BBAM1 offered rate for deposits in U.S. dollars at approximately two business days prior to the first day of such interest period for a three (3) month term; multiplied by the Statutory Reserve Rate. The Statutory Reserve Rate is based on a fraction, the numerator of which is the number one and the denominator of which is the number one minus the applicable reserve percentage for that day. Payments of interest under Ares Loan are to be made quarterly commencing on March 31, 2020.