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Stockholders' Equity - Changes in Number of Shares of Class A Stock Outstanding (Details) - Class A Stock - shares | 3 Months Ended | 9 Months Ended
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Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |  |  |  |
Class A Stock outstanding, beginning of period | 11,270,944 | 12,592,646 | 12,447,036 | 12,381,778
Issued pursuant to share-based compensation plans | 17,098 | 31,582 | 103,549 | 242,450
Repurchased and canceled pursuant to the stock buy-back | (413,052) | (108,494) | (1,675,595) | (108,494)
Class A Stock outstanding, end of period | 10,874,990 | 12,515,734 | 10,874,990 | 12,515,734

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- Definition Number of shares issued under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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