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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands | Common Stock | Additional Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive Loss | Treasury Stock | Deferred Compensation Arrangements | Total
--- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2021 | $ 54,092 | $ 1,041,304 | $ 1,058,286 | $ (50,627) | $ (10,610) | $ 8,362 | $ 2,100,807
Balance (in shares) at Dec. 31, 2021 | 53,878,047 |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income |  |  | 86,860 |  |  |  | 86,860
Other comprehensive loss, net of tax |  |  |  | (468,100) |  |  | (468,100)
Dividends declared: |  |  |  |  |  |  |
Common |  |  | (46,482) |  |  |  | (46,482)
Common stock activity under employee stock plans | $ 93 | 706 |  |  |  |  | 799
Common stock activity under employee stock plans (in shares) | 92,695 |  |  |  |  |  |
Stock-based compensation |  | 4,190 |  |  |  |  | 4,190
Distribution of stock under deferred compensation arrangements |  | 103 |  |  | 739 | (842) | 0
Distribution of stock under deferred compensation arrangements (in shares) | 14,934 |  |  |  |  |  |
Treasury stock purchased |  |  |  |  | (16,378) |  | (16,378)
Treasury stock purchased (in shares) | (250,000) |  |  |  |  |  |
Treasury stock issued to benefit plans, net |  |  |  |  | (120) | 120 | 0
Treasury stock issued to benefit plans, net (in shares) | (1,649) |  |  |  |  |  |
Balance at Jun. 30, 2022 | $ 54,185 | 1,046,303 | 1,098,664 | (518,727) | (26,369) | 7,640 | 1,661,696
Balance (in shares) at Jun. 30, 2022 | 53,734,027 |  |  |  |  |  |
Balance at Mar. 31, 2022 | $ 54,164 | 1,043,707 | 1,082,107 | (321,994) | (13,464) | 7,583 | 1,852,103
Balance (in shares) at Mar. 31, 2022 | 53,913,362 |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income |  |  | 39,805 |  |  |  | 39,805
Other comprehensive loss, net of tax |  |  |  | (196,733) |  |  | (196,733)
Dividends declared: |  |  |  |  |  |  |
Common |  |  | (23,248) |  |  |  | (23,248)
Common stock activity under employee stock plans | $ 21 | 293 |  |  |  |  | 314
Common stock activity under employee stock plans (in shares) | 21,481 |  |  |  |  |  |
Stock-based compensation |  | 2,304 |  |  |  |  | 2,304
Distribution of stock under deferred compensation arrangements |  | (1) |  |  | 1 |  | 0
Distribution of stock under deferred compensation arrangements (in shares) | 20 |  |  |  |  |  |
Treasury stock purchased |  |  |  |  | (12,849) |  | (12,849)
Treasury stock purchased (in shares) | (200,000) |  |  |  |  |  |
Treasury stock issued to benefit plans, net |  |  |  |  | (57) | 57 | 0
Treasury stock issued to benefit plans, net (in shares) | (836) |  |  |  |  |  |
Balance at Jun. 30, 2022 | $ 54,185 | 1,046,303 | 1,098,664 | (518,727) | (26,369) | 7,640 | 1,661,696
Balance (in shares) at Jun. 30, 2022 | 53,734,027 |  |  |  |  |  |
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 |  |  | 54,089 |  |  |  | 54,089
Other comprehensive loss, net of tax |  |  |  | 74,737 |  |  | 74,737
Dividends declared: |  |  |  |  |  |  |
Common |  |  | (47,415) |  |  |  | (47,415)
Common stock activity under employee stock plans | $ 174 | 490 |  |  |  |  | 664
Common stock activity under employee stock plans (in shares) | 173,539 |  |  |  |  |  |
Stock-based compensation |  | 4,194 |  |  |  |  | 4,194
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 |  |  |  |  | (20,568) |  | (20,568)
Treasury stock purchased (in shares) | (400,000) |  |  |  |  |  |
Treasury stock issued to benefit plans, net |  |  |  |  | (111) | 111 | 0
Treasury stock issued to benefit plans, net (in shares) | (1,962) |  |  |  |  |  |
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 |  |  |  |  |  |
Balance at Mar. 31, 2023 | $ 54,360 | 1,052,802 | 1,134,527 | (578,085) | (36,325) | 6,734 | 1,634,013
Balance (in shares) at Mar. 31, 2023 | 53,724,917 |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income |  |  | 48,291 |  |  |  | 48,291
Other comprehensive loss, net of tax |  |  |  | (33,617) |  |  | (33,617)
Dividends declared: |  |  |  |  |  |  |
Common |  |  | (23,692) |  |  |  | (23,692)
Common stock activity under employee stock plans | $ 4 | 147 |  |  |  |  | 151
Common stock activity under employee stock plans (in shares) | 4,206 |  |  |  |  |  |
Stock-based compensation |  | 1,922 |  |  |  |  | 1,922
Treasury stock purchased |  |  |  |  | (9,662) |  | (9,662)
Treasury stock purchased (in shares) | (200,000) |  |  |  |  |  |
Treasury stock issued to benefit plans, net |  |  |  |  | (51) | 51 | 0
Treasury stock issued to benefit plans, net (in shares) | (1,033) |  |  |  |  |  |
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 |  |  |  |  |  |

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