Consolidated Balance Sheets - Parenthetical - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Allowance for doubtful accounts	$ 0.2	$ 0.2
Inventory reserves	$ 0.3	$ 0.3
Common stock, par value (usd per share)		$ 0.01
Common stock, shares authorized (shares)	426,000,000	1,000
Common stock, shares issued (shares)		995
Common stock, shares outstanding (shares)	70,805,034	995
Treasury stock (shares)	0	5
Common Class A
Common stock, par value (usd per share)	$ 0.0001
Common stock, shares authorized (shares)	200,000,000
Common stock, shares issued (shares)	64,293,741
Common stock, shares outstanding (shares)	64,293,741
Common Class C
Common stock, par value (usd per share)	$ 0.0001
Common stock, shares authorized (shares)	200,000,000
Common stock, shares issued (shares)	6,511,293
Common stock, shares outstanding (shares)	6,511,293