CONSOLIDATED BALANCE SHEET (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Allowance and reserves	$ 28,908	$ 27,839
Treasury stock (shares)	16,320,000	15,905,000
Class A Common Stock
Common stock, par value (USD per share)	$ 0.001	$ 0.001
Common stock authorized (shares)	2,000,000,000	2,000,000,000
Common stock issued (shares)	98,408,000	82,088,000
Common stock outstanding (shares)	94,283,000	78,333,000
Class B Common Stock
Common stock, par value (USD per share)	$ 0.001	$ 0.001
Common stock authorized (shares)	1,500,000,000	1,500,000,000
Common stock issued (shares)	421,958,000	421,862,000
Common stock outstanding (shares)	421,958,000	421,862,000
Class C Common Stock
Common stock, par value (USD per share)	$ 0.001	$ 0.001
Common stock authorized (shares)	1,500,000,000	1,500,000,000
Common stock issued (shares)	0	0
Common stock outstanding (shares)	0	0