Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions	Nov. 10, 2020	Aug. 24, 2020	Jun. 30, 2020	Dec. 31, 2019
Class A common stock
Subsequent Event [Line Items]
Common stock, par value (in dollars per share)			$ 0.01	$ 0.01
Subsequent Event | EverString Technology, LLC
Subsequent Event [Line Items]
Cash	$ 71.5
Subsequent Event | Class A common stock
Subsequent Event [Line Items]
Common stock, par value (in dollars per share)		$ 0.01
Public offering price (in dollars per share)		$ 37.00
Number of shares sold (in shares)		0
Subsequent Event | Class A common stock | EverString Technology, LLC
Subsequent Event [Line Items]
Number of shares issued (in shares)	67,075
Subsequent Event | Certain Selling Stockholders | Private Placement | Class A common stock
Subsequent Event [Line Items]
Number of shares sold by stockholders (in shares)		14,938,379
Subsequent Event | Certain Selling Stockholders | Over-Allotment Option | Class A common stock
Subsequent Event [Line Items]
Number of shares sold by stockholders (in shares)		2,240,756