Convertible and Redeemable Series A-2 Preferred Stock - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended				9 Months Ended
	Apr. 13, 2020	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Temporary Equity [Line Items]
Period between issuance and expiration of outstanding warrant	10 years
Proceeds from the Series A-2 and Warrant	$ 175,000
Percentage of dividends accrued	14.20%
Preferred stock, dividends paid		$ 4,100	$ 4,100	$ 4,100	$ 2,870
Compound embedded derivative, change in value						$ (1,651)	$ (17,492)
Convertible And Redeemable Series A-2 Preferred Stock
Temporary Equity [Line Items]
Number of shares issued	17,500	17,500				17,500		17,500
Par value per share	$ 0.0001	$ 0.0001				$ 0.0001		$ 0.0001
Debt issuance costs, net	$ 1,300
Percentage of dividends accrued	15.00%
Preferred stock, dividends paid		$ 4,100			$ 2,900	$ 12,300	$ 2,900
Percentage of discount on common stock market price						15.00%
Percentage of dividend rate stepped downs per year						9.00%
Percentage of dividend rate increase per annum in the event of noncompliance						12.00%
Number of days dividend increase rate applicable noncompliance event occurred						90 days
Percentage of dividend rate increase per annum upon noncompliance occurred and thereafter						14.00%
Number of times increase in debt incurrence test ratio						4.5
Minimum repayment amount						$ 50,000
Minimum repayment amount drop down						$ 25,000
Temporary equity description						The Company may, at its option on any one or more dates, redeem all or a minimum portion (the lesser of (i) $25.0 million in aggregate stated value of the Convertible and Redeemable Series A-2 Preferred Stock and (ii) all of the Convertible and Redeemable Series A-2 Preferred Stock then outstanding) of the outstanding Convertible and Redeemable Series A-2 Preferred Stock in cash.
Aggregate stated value of stock redeemed		25,000				$ 25,000
Aggregate liquidation preference		182,200				182,200		$ 182,200
Compound embedded derivative, fair value net		22,500				22,500
Convertible And Redeemable Series A-2 Preferred Stock | Other Expense
Temporary Equity [Line Items]
Compound embedded derivative, change in value		500				1,700
Convertible And Redeemable Series A-2 Preferred Stock | 60-Day Period Prior to Seventh Anniversary
Temporary Equity [Line Items]
Temporary equity convertible into common stock		60,000				60,000
Convertible And Redeemable Series A-2 Preferred Stock | Year 5
Temporary Equity [Line Items]
Temporary equity convertible into common stock		60,000				60,000
Convertible And Redeemable Series A-2 Preferred Stock | Year 6
Temporary Equity [Line Items]
Temporary equity convertible into common stock		$ 120,000				$ 120,000