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v3.24.0.1

Capital - Additional Information (Detail) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Oct. 31, 2021 | Dec. 31, 2020
Subsequent Event [Line Items] |  |  |  |  |
Shareholders' equity | $ 1,314,274,000 | $ 1,052,074,000 | $ 1,109,372,000 |  | $ 1,068,617,000
Increase (decrease) in equity | 262,200,000 |  |  |  |
Net Income | 157,063,000 | 128,181,000 | 138,257,000 |  |
Payments of dividends | 50,814,000 | 44,578,000 | 43,611,000 |  |
Purchase of treasury stock | $ 14,965,000 | $ 15,598,000 | $ 31,301,000 |  |
Cash Dividends Declared per Common Share (in dollars per share) | $ 0.495 | $ 0.475 | $ 0.455 |  |
Borrowings | $ 0 |  |  |  |
Treasury stock reissued | 2,211,000 | $ 2,192,000 | $ 2,264,000 |  |
Dividends, Common Stock, Cash | (50,814,000) | (44,578,000) | (43,611,000) |  |
Treasury Stock, Value, Acquired, Cost Method | (15,083,000) | (15,598,000) | (31,301,000) |  |
Total other comprehensive (loss) Income | 25,936,000 | (128,924,000) | (26,001,000) |  |
Parent Company [Member] |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Shareholders' equity | 1,314,274,000 | 1,052,074,000 |  |  |
Net Income | 157,063,000 | 128,181,000 | 138,257,000 |  |
Payments of dividends | 50,814,000 | 44,578,000 | 43,611,000 |  |
Purchase of treasury stock | 14,965,000 | 15,598,000 | 31,301,000 |  |
Payments to Acquire Businesses and Interest in Affiliates | $ (18,000) | $ 0 | $ 0 |  |
2021 Share Repurchase Plan 2 |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Announcement of common stock repurchase program |  |  |  | $ 25,000,000 |
Stock repurchased (in shares) | 2,491,577 |  |  |  |
Average price per share | $ 13.08 |  |  |  |

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