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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands | Common Stock | Additional Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive (Loss)/Income | Treasury Stock | Deferred Compensation Arrangements | Total
--- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2022 | $ 54,190 | $ 1,050,231 | $ 1,152,452 | $ (686,439) | $ (26,485) | $ 7,756 | $ 1,551,705
Balance (in shares) at Dec. 31, 2022 | 53,737,249 |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income |  |  | 98,218 |  |  |  | 98,218
Other comprehensive loss, net of tax |  |  |  | (5,254) |  |  | (5,254)
Dividends declared: |  |  |  |  |  |  |
Common |  |  | (71,474) |  |  |  | (71,474)
Common stock activity under employee stock plans | $ 174 | 537 |  |  | (163) | 163 | 711
Common stock activity under employee stock plans (in shares) | 173,610 |  |  |  |  |  |
Stock-based compensation |  | 6,709 |  |  |  |  | 6,709
Distribution of stock under deferred compensation arrangements |  | (44) |  |  | 1,126 | (1,082) | 0
Distribution of stock under deferred compensation arrangements (in shares) | 19,264 |  |  |  |  |  |
Treasury stock purchased |  |  |  |  | (25,676) |  | (25,676)
Treasury stock purchased (in shares) | (503,134) |  |  |  |  |  |
Balance at Sep. 30, 2023 | $ 54,364 | 1,057,433 | 1,179,196 | (691,693) | (51,198) | 6,837 | 1,554,939
Balance (in shares) at Sep. 30, 2023 | 53,426,989 |  |  |  |  |  |
Balance at Jun. 30, 2023 | $ 54,364 | 1,054,871 | 1,159,126 | (611,702) | (46,038) | 6,785 | 1,617,406
Balance (in shares) at Jun. 30, 2023 | 53,528,090 |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income |  |  | 44,129 |  |  |  | 44,129
Other comprehensive loss, net of tax |  |  |  | (79,991) |  |  | (79,991)
Dividends declared: |  |  |  |  |  |  |
Common |  |  | (24,059) |  |  |  | (24,059)
Common stock activity under employee stock plans | $ 0 | 47 |  |  | (52) | 52 | 47
Common stock activity under employee stock plans (in shares) | 71 |  |  |  |  |  |
Stock-based compensation |  | 2,515 |  |  |  |  | 2,515
Treasury stock purchased |  |  |  |  | (5,108) |  | (5,108)
Treasury stock purchased (in shares) | (101,172) |  |  |  |  |  |
Balance at Sep. 30, 2023 | $ 54,364 | 1,057,433 | 1,179,196 | (691,693) | (51,198) | 6,837 | 1,554,939
Balance (in shares) at Sep. 30, 2023 | 53,426,989 |  |  |  |  |  |
Balance at Dec. 31, 2023 | $ 54,372 | 1,060,289 | 1,188,869 | (556,892) | (55,592) | 6,891 | 1,697,937
Balance (in shares) at Dec. 31, 2023 | 53,327,060 |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income |  |  | 132,688 |  |  |  | 132,688
Other comprehensive loss, net of tax |  |  |  | 62,860 |  |  | 62,860
Dividends declared: |  |  |  |  |  |  |
Common |  |  | (71,764) |  |  |  | (71,764)
Common stock activity under employee stock plans | $ 201 | 2,501 |  |  |  |  | 2,702
Common stock activity under employee stock plans (in shares) | 201,146 |  |  |  |  |  |
Stock-based compensation |  | 6,506 |  |  |  |  | 6,506
Distribution of stock under deferred compensation arrangements |  | (38) |  |  | 1,082 | (1,044) | 0
Distribution of stock under deferred compensation arrangements (in shares) | 20,769 |  |  |  |  |  |
Treasury stock purchased |  |  |  |  | (45,982) |  | (45,982)
Treasury stock purchased (in shares) | (1,003,084) |  |  |  |  |  |
Balance at Sep. 30, 2024 | $ 54,573 | 1,069,258 | 1,249,793 | (494,032) | (100,492) | 5,847 | 1,784,947
Balance (in shares) at Sep. 30, 2024 | 52,545,891 |  |  |  |  |  |
Balance at Jun. 30, 2024 | $ 54,549 | 1,065,937 | 1,230,133 | (585,794) | (100,446) | 5,801 | 1,670,180
Balance (in shares) at Jun. 30, 2024 | 52,522,803 |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income |  |  | 43,901 |  |  |  | 43,901
Other comprehensive loss, net of tax |  |  |  | 91,762 |  |  | 91,762
Dividends declared: |  |  |  |  |  |  |
Common |  |  | (24,241) |  |  |  | (24,241)
Common stock activity under employee stock plans | $ 24 | 1,284 |  |  |  |  | 1,308
Common stock activity under employee stock plans (in shares) | 24,048 |  |  |  |  |  |
Stock-based compensation |  | 2,083 |  |  |  |  | 2,083
Distribution of stock under deferred compensation arrangements |  | (46) |  |  |  | 46 | 0
Treasury stock purchased |  |  |  |  | (46) |  | (46)
Treasury stock purchased (in shares) | (960) |  |  |  |  |  |
Balance at Sep. 30, 2024 | $ 54,573 | $ 1,069,258 | $ 1,249,793 | $ (494,032) | $ (100,492) | $ 5,847 | $ 1,784,947
Balance (in shares) at Sep. 30, 2024 | 52,545,891 |  |  |  |  |  |

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