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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands | Total | Class A | Common Stock | Common Stock Class A | Common Stock Class B | Treasury Stock | Treasury Stock Class B | Retained Earnings | Accumulated Other Comprehensive Income (Loss), Net of Tax | Redeemable Noncontrolling Interests in Subsidiaries/ Temporary Equity
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Common stock, beginning balance (in shares) at Dec. 31, 2018 |  |  |  | 9,000 | 100,803,382 |  |  |  |  |
Treasury stock, beginning balance (in shares) at Dec. 31, 2018 |  |  |  |  |  | 8,702,074 |  |  |  |
Balance, beginning of period at Dec. 31, 2018 | $ 857,121 |  | $ 367,252 |  |  | $ (287,337) |  | $ 791,823 | $ (14,617) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net Income (Loss) | 272,339 |  |  |  |  |  |  | 272,339 |  |
Other Comprehensive Income (Loss), net of tax | 14,368 |  |  |  |  |  |  |  | 14,368 |
Stock Award Activity (in shares) |  |  |  |  | 941,074 |  |  |  |  |
Stock Award Activity (in shares) |  |  |  |  |  | (941,074) |  |  |  |
Stock Award Activity | 26,389 |  | 24,958 |  |  | $ 22,045 |  | (20,614) |  |
Dividends Declared | (109,049) |  |  |  |  |  |  | (109,049) |  |
Change in Estimated Redemption Value of Redeemable Noncontrolling Interests | (4,148) |  |  |  |  |  |  | (4,148) |  |
Purchase of treasury stock (in shares) |  |  |  |  | (614,077) |  |  |  |  |
Purchase of treasury stock (in shares) |  |  |  |  |  | 614,077 |  |  |  |
Purchase of Treasury Stock | (15,740) |  |  |  |  | $ (15,740) |  |  |  |
Common stock, ending balance (in shares) at Dec. 31, 2019 |  |  |  | 9,000 | 101,130,379 |  |  |  |  |
Treasury stock, ending balance (in shares) at Dec. 31, 2019 |  |  |  |  |  | 8,375,077 |  |  |  |
Balance, end of period at Dec. 31, 2019 | 1,041,280 |  | 392,210 |  |  | $ (281,032) |  | 930,351 | (249) |
Balance, beginning of period at Dec. 31, 2018 |  |  |  |  |  |  |  |  |  | $ 182,513
Increase (Decrease) in Temporary Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net Income (Loss) |  |  |  |  |  |  |  |  |  | 4,786
Other Comprehensive Income (Loss), net of tax |  |  |  |  |  |  |  |  |  | 6,907
Subscriptions – Redeemable Noncontrolling Interest Holders |  |  |  |  |  |  |  |  |  | 9,356
Consolidation/(Deconsolidation) |  |  |  |  |  |  |  |  |  | 454
Stock Award Activity |  |  |  |  |  |  |  |  |  | 7,888
Distributions to Noncontrolling Interests in Subsidiaries |  |  |  |  |  |  |  |  |  | (3,580)
Business Acquisition |  |  |  |  |  |  |  |  |  | (386)
Change in Estimated Redemption Value of Redeemable Noncontrolling Interests |  |  |  |  |  |  |  |  |  | 4,148
Balance, end of period at Dec. 31, 2019 |  |  |  |  |  |  |  |  |  | 212,086
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net Income (Loss) | 326,364 |  |  |  |  |  |  | 326,364 |  |
Other Comprehensive Income (Loss), net of tax | 15,420 |  |  |  |  |  |  |  | 15,420 |
Stock Award Activity (in shares) |  |  |  |  | 1,141,331 |  |  |  |  |
Stock Award Activity (in shares) |  |  |  |  |  | (1,141,331) |  |  |  |
Stock Award Activity | 28,103 |  | 26,648 |  |  | $ 24,206 |  | (22,751) |  |
Dividends Declared | (207,744) |  |  |  |  |  |  | (207,744) |  |
Change in Estimated Redemption Value of Redeemable Noncontrolling Interests | 1,479 |  |  |  |  |  |  | 1,479 |  |
Purchase of treasury stock (in shares) |  |  |  |  | (2,940,267) |  |  |  |  |
Purchase of treasury stock (in shares) |  |  |  |  |  | 2,940,267 |  |  |  |
Purchase of Treasury Stock | $ (67,905) |  |  |  |  | $ (67,905) |  |  |  |
Common stock, ending balance (in shares) at Dec. 31, 2020 |  | 9,000 |  | 9,000 | 99,331,443 |  |  |  |  |
Treasury stock, ending balance (in shares) at Dec. 31, 2020 | 10,174,013 |  |  |  |  | 10,174,013 |  |  |  |
Balance, end of period at Dec. 31, 2020 | $ 1,136,997 |  | 418,858 |  |  | $ (324,731) |  | 1,027,699 | 15,171 |
Increase (Decrease) in Temporary Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net Income (Loss) |  |  |  |  |  |  |  |  |  | 9,658
Other Comprehensive Income (Loss), net of tax |  |  |  |  |  |  |  |  |  | 6,593
Subscriptions – Redeemable Noncontrolling Interest Holders |  |  |  |  |  |  |  |  |  | 20,985
Consolidation/(Deconsolidation) |  |  |  |  |  |  |  |  |  | (3,424)
Stock Award Activity |  |  |  |  |  |  |  |  |  | 8,786
Distributions to Noncontrolling Interests in Subsidiaries |  |  |  |  |  |  |  |  |  | (16,218)
Change in Estimated Redemption Value of Redeemable Noncontrolling Interests |  |  |  |  |  |  |  |  |  | (1,479)
Balance, end of period at Dec. 31, 2020 |  |  |  |  |  |  |  |  |  | 236,987
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net Income (Loss) | 270,293 |  |  |  |  |  |  | 270,293 |  |
Other Comprehensive Income (Loss), net of tax | 1,191 |  |  |  |  |  |  |  | 1,191 |
Stock Award Activity (in shares) |  |  |  |  | 1,225,363 |  |  |  |  |
Stock Award Activity (in shares) |  |  |  |  |  | (1,225,363) |  |  |  |
Stock Award Activity | 31,737 |  | 30,260 |  |  | $ 25,995 |  | (24,518) |  |
Dividends Declared | (105,729) |  |  |  |  |  |  | (105,729) |  |
Change in Estimated Redemption Value of Redeemable Noncontrolling Interests | 19,256 |  |  |  |  |  |  | 19,256 |  |
Purchase of treasury stock (in shares) |  |  |  |  | (7,145,838) |  |  |  |  |
Purchase of treasury stock (in shares) |  |  |  |  |  | 7,145,838 | 7,100,000 |  |  |
Purchase of Treasury Stock | $ (239,728) |  |  |  |  | $ (239,728) |  |  |  |
Common stock, ending balance (in shares) at Dec. 31, 2021 |  | 9,000 |  | 9,000 | 93,410,968 |  |  |  |  |
Treasury stock, ending balance (in shares) at Dec. 31, 2021 | 16,094,488 |  |  |  |  | 16,094,488 |  |  |  |
Balance, end of period at Dec. 31, 2021 | $ 1,114,017 |  | $ 449,118 |  |  | $ (538,464) |  | $ 1,187,001 | $ 16,362 |
Increase (Decrease) in Temporary Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Net Income (Loss) |  |  |  |  |  |  |  |  |  | 2,015
Other Comprehensive Income (Loss), net of tax |  |  |  |  |  |  |  |  |  | (7,443)
Subscriptions – Redeemable Noncontrolling Interest Holders |  |  |  |  |  |  |  |  |  | 998,965
Consolidation/(Deconsolidation) |  |  |  |  |  |  |  |  |  | (985,248)
Stock Award Activity |  |  |  |  |  |  |  |  |  | 9,410
Distributions to Noncontrolling Interests in Subsidiaries |  |  |  |  |  |  |  |  |  | (4,926)
Acquisition of Additional Equity of HFML |  |  |  |  |  |  |  |  |  | (167,302)
Change in Estimated Redemption Value of Redeemable Noncontrolling Interests |  |  |  |  |  |  |  |  |  | (19,256)
Balance, end of period at Dec. 31, 2021 |  |  |  |  |  |  |  |  |  | $ 63,202

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