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v3.21.2

Consolidated Balance Sheets (Parenthetical) - $ / shares | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Preferred stock, par or stated value per share (in dollars per share) | $ 0.001 | $ 0.001
Preferred stock authorized (in shares) | 49,889,000 | 49,889,000
Preferred stock issued (in shares) | 0 |
Preferred stock outstanding (in shares) | 0 | 0
Treasury stock (in shares) | 39,992,000 | 22,043,000
Class A Common Stock |  |
Common stock, par or stated value per share (in dollars per share) | $ 0.004 | $ 0.004
Common stock authorized (in shares) | 700,000,000 | 700,000,000
Common stock issued (in shares) | 154,777,000 | 137,162,000
Common stock outstanding (in shares) | 114,786,000 | 115,119,000
Class B Common Stock |  |
Common stock, par or stated value per share (in dollars per share) | $ 0.004 | $ 0.004
Common stock authorized (in shares) | 175,000,000 | 175,000,000
Common stock issued (in shares) | 73,542,000 | 90,792,000
Common stock outstanding (in shares) | 73,542,000 | 90,792,000

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