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v3.20.2

Equity - Activity for Class B Common Stock and Treasury Stock (Details) - shares | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Beginning Balance (in shares) | 8,439,747 | 8,264,583 | 8,375,077 | 8,702,074
Stock Award Activity (in shares) | (56,750) | (22,750) | (706,331) | (521,074)
Purchase of Treasury Stock (in shares) | 843,416 | 52,600 | 1,557,667 | 113,433
Ending Balance (in shares) | 9,226,413 | 8,294,433 | 9,226,413 | 8,294,433
Class B Shares |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Beginning Balance (in shares) | 101,065,709 | 101,240,873 | 101,130,379 | 100,803,382
Stock Award Activity (in shares) | 56,750 | 22,750 | 706,331 | 521,074
Purchase of Treasury Stock (in shares) | (843,416) | (52,600) | (1,557,667) | (113,433)
Ending Balance (in shares) | 100,279,043 | 101,211,023 | 100,279,043 | 101,211,023
Purchase of Treasury Stock (in shares) |  |  | 1,600,000 |

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