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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Common Stock | Class A Common Stock | Common Stock Common Stock | Common Stock Class A Common Stock | Treasury Stock | Additional Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive Loss
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2020 |  |  |  | 29,600,000 | 1,996,000 |  |  |  |
Beginning balance at Dec. 31, 2020 |  |  |  | $ 29,600 | $ 1,996 | $ (177,545) | $ 96,850 | $ 304,626 | $ (2,560)
Beginning balance (in shares) at Dec. 31, 2020 |  |  |  |  |  | (13,384,000) |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Conversion of Class A Common Stock (in shares) |  |  |  | 187,000 |  |  |  |  |
Conversion of Class A Common Stock |  |  |  | $ 187 |  |  |  |  |
Stock compensation transactions, net (in shares) |  |  |  | 120,000 |  |  |  |  |
Stock compensation transactions, net |  |  |  | $ 120 |  |  |  |  |
Conversion to Common Stock (in shares) |  |  |  |  | (187,000) |  |  |  |
Conversion to Common Stock |  |  |  |  | $ (187) |  |  |  |
Directors' compensation plan (in shares) |  |  |  |  |  | 25,000 |  |  |
Directors’ Compensation Plan |  |  |  |  |  | $ 346 | 523 |  |
Purchases (in shares) |  |  |  |  |  | (1,232,000) |  |  |
Purchases |  |  |  |  |  | $ (41,809) |  |  |
Shares issued under incentive plans, net |  |  |  |  |  |  | (3,014) |  |
Stock-based compensation expense |  |  |  |  |  |  | 8,213 |  |
Net income | $ 90,803 |  |  |  |  |  |  | 90,803 |
Cash dividends per share: Common Stock: 2023 – $2.18; 2022 - $2.09; and 2021 – $2.97 Class A Common Stock: 2023 - $2.05; 2022 - $1.96; and 2021– $2.79 |  | $ (48,837) | $ (3,609) |  |  |  |  | (52,446) |
Pension liabilities adjustment, net of taxes | 267 |  |  |  |  |  |  |  | 267
Ending balance (in shares) at Dec. 31, 2021 |  |  |  | 29,907,000 | 1,809,000 |  |  |  |
Ending balance (in shares) at Dec. 31, 2021 |  |  | (522,000) |  |  | (14,591,000) |  |  |
Ending balance at Dec. 31, 2021 | 255,970 |  |  | $ 29,907 | $ 1,809 | $ (219,008) | 102,572 | 342,983 | (2,293)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Conversion of Class A Common Stock (in shares) |  |  |  | 3,000 |  |  |  |  |
Conversion of Class A Common Stock |  |  |  | $ 3 |  |  |  |  |
Stock compensation transactions, net (in shares) |  |  |  | 96,000 |  |  |  |  |
Stock compensation transactions, net |  |  |  | $ 96 |  |  |  |  |
Conversion to Common Stock (in shares) |  |  |  |  | (3,000) |  |  |  |
Conversion to Common Stock |  |  |  |  | $ (3) |  |  |  |
Directors' compensation plan (in shares) |  |  |  |  |  | 16,000 |  |  |
Directors’ Compensation Plan |  |  |  |  |  | $ 250 | 707 |  |
Purchases (in shares) |  |  |  |  |  | (1,087,000) |  |  |
Purchases |  |  |  |  |  | $ (29,998) |  |  |
Shares issued under incentive plans, net |  |  |  |  |  |  | (1,768) |  |
Stock-based compensation expense |  |  |  |  |  |  | 7,195 |  |
Net income | 89,358 |  |  |  |  |  |  | 89,358 |
Cash dividends per share: Common Stock: 2023 – $2.18; 2022 - $2.09; and 2021 – $2.97 Class A Common Stock: 2023 - $2.05; 2022 - $1.96; and 2021– $2.79 |  | $ (31,432) | $ (2,516) |  |  |  |  | (33,948) |
Pension liabilities adjustment, net of taxes | 1,537 |  |  |  |  |  |  |  | 1,537
Ending balance (in shares) at Dec. 31, 2022 |  |  |  | 30,006,000 | 1,806,000 |  |  |  |
Ending balance (in shares) at Dec. 31, 2022 |  | (15,140,000) | (522,000) |  |  | (15,662,000) |  |  |
Ending balance at Dec. 31, 2022 | 289,399 |  |  | $ 30,006 | $ 1,806 | $ (248,756) | 108,706 | 398,393 | (756)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Conversion of Class A Common Stock (in shares) |  |  |  | 2,000 |  |  |  |  |
Conversion of Class A Common Stock |  |  |  | $ 2 |  |  |  |  |
Stock compensation transactions, net (in shares) |  |  |  | 212,000 |  |  |  |  |
Stock compensation transactions, net |  |  |  | $ 212 |  |  |  |  |
Conversion to Common Stock (in shares) |  |  |  |  | (2,000) |  |  |  |
Conversion to Common Stock |  |  |  |  | $ (2) |  |  |  |
Directors' compensation plan (in shares) |  |  |  |  |  | 12,000 |  |  |
Directors’ Compensation Plan |  |  |  |  |  | $ 197 | 880 |  |
Purchases (in shares) |  |  |  |  |  | (227,000) |  |  |
Purchases |  |  |  |  |  | $ (6,895) |  |  |
Shares issued under incentive plans, net |  |  |  |  |  |  | (4,289) |  |
Stock-based compensation expense |  |  |  |  |  |  | 8,010 |  |
Net income | 56,319 |  |  |  |  |  |  | 56,319 |
Cash dividends per share: Common Stock: 2023 – $2.18; 2022 - $2.09; and 2021 – $2.97 Class A Common Stock: 2023 - $2.05; 2022 - $1.96; and 2021– $2.79 |  | $ (32,612) | $ (2,628) |  |  |  |  | (35,240) |
Pension liabilities adjustment, net of taxes | (227) |  |  |  |  |  |  |  | (227)
Ending balance (in shares) at Dec. 31, 2023 |  |  |  | 30,220,000 | 1,804,000 |  |  |  |
Ending balance (in shares) at Dec. 31, 2023 |  | (15,355,000) | (522,000) |  |  | (15,877,000) |  |  |
Ending balance at Dec. 31, 2023 | $ 308,366 |  |  | $ 30,220 | $ 1,804 | $ (255,454) | $ 113,307 | $ 419,472 | $ (983)

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