Business and Basis of Presentation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		9 Months Ended
	Jun. 29, 2020	Sep. 30, 2020	Sep. 30, 2019
Class of Stock [Line Items]
Date of incorporation or formation		Jul. 01, 2019
Proceeds from issuance of Class A common stock, net of underwriting discounts		$ 167,346	$ 0
Common Class A
Class of Stock [Line Items]
Offering price per share	$ 13.25
Proceeds from issuance of Class A common stock, net of underwriting discounts	$ 166,500
Underwriting discounts and commissions	7,900
Offering expenses	$ 798
Common Class A | Offering
Class of Stock [Line Items]
Shares of stock sold	13,225,000
Common Class A | Over-Allotment Option
Class of Stock [Line Items]
Shares of stock sold	1,725,000