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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Common Stock [Member] | Common Stock and Paid in Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
--- | --- | --- | --- | --- | ---
Balance, beginning of the period (in shares) at Dec. 31, 2021 |  | 34,252,632 |  |  |
Balance, beginning of the period at Dec. 31, 2021 | $ 1,690,327 |  | $ 1,299,381 | $ 390,762 | $ 184
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net Income (Loss) Attributable to Parent | 43,963 |  |  | 43,963 |
Other Comprehensive Income (Loss), Net of Tax | (154,275) |  |  |  | (154,275)
Accrual of dividends on common stock | (15,066) |  |  | (15,066) |
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture |  | 120,152 |  |  |
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered | (1,169) |  | (1,169) |  |
Balance, end of the period (in shares) at Mar. 31, 2022 |  | 34,372,784 |  |  |
Balance, end of the period at Mar. 31, 2022 | $ 1,563,780 |  | 1,298,212 | 419,659 | (154,091)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Common Stock, Dividends, Per Share, Declared | $ 0.44 |  |  |  |
Balance, beginning of the period (in shares) at Dec. 31, 2021 |  | 34,252,632 |  |  |
Balance, beginning of the period at Dec. 31, 2021 | $ 1,690,327 |  | 1,299,381 | 390,762 | 184
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net Income (Loss) Attributable to Parent | 140,998 |  |  |  |
Other Comprehensive Income (Loss), Net of Tax | (369,374) |  |  |  |
Balance, end of the period (in shares) at Sep. 30, 2022 |  | 34,191,759 |  |  |
Balance, end of the period at Sep. 30, 2022 | $ 1,408,659 |  | 1,291,741 | 486,108 | (369,190)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Common Stock, Dividends, Per Share, Declared | $ 1.32 |  |  |  |
Balance, beginning of the period (in shares) at Mar. 31, 2022 |  | 34,372,784 |  |  |
Balance, beginning of the period at Mar. 31, 2022 | $ 1,563,780 |  | 1,298,212 | 419,659 | (154,091)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net Income (Loss) Attributable to Parent | 47,965 |  |  | 47,965 |
Other Comprehensive Income (Loss), Net of Tax | (101,824) |  |  |  | (101,824)
Accrual of dividends on common stock | (15,378) |  |  | (15,378) |
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture |  | 18,546 |  |  |
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered | 2,247 |  | 2,247 |  |
Repurchase of common stock (in shares) |  | (200,000) |  |  |
Repurchase of common stock | (10,960) |  | (10,960) |  |
Balance, end of the period (in shares) at Jun. 30, 2022 |  | 34,191,330 |  |  |
Balance, end of the period at Jun. 30, 2022 | $ 1,485,830 |  | 1,289,499 | 452,246 | (255,915)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Common Stock, Dividends, Per Share, Declared | $ 0.44 |  |  |  |
Net Income (Loss) Attributable to Parent | $ 49,070 |  |  | 49,070 |
Other Comprehensive Income (Loss), Net of Tax | (113,275) |  |  |  | (113,275)
Accrual of dividends on common stock | (15,208) |  |  | (15,208) |
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture |  | 429 |  |  |
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered | 2,242 |  | 2,242 |  |
Balance, end of the period (in shares) at Sep. 30, 2022 |  | 34,191,759 |  |  |
Balance, end of the period at Sep. 30, 2022 | $ 1,408,659 |  | 1,291,741 | 486,108 | (369,190)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Common Stock, Dividends, Per Share, Declared | $ 0.44 |  |  |  |
Net Income (Loss) Attributable to Parent | $ 54,380 |  |  | 54,380 |
Other Comprehensive Income (Loss), Net of Tax | 6,421 |  |  |  | 6,421
Accrual of dividends on common stock | (15,246) |  |  | (15,246) |
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture |  | 2,259 |  |  |
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered | 2,218 |  | 2,218 |  |
Balance, end of the period (in shares) at Dec. 31, 2022 |  | 34,194,018 |  |  |
Balance, end of the period at Dec. 31, 2022 | $ 1,456,432 |  | 1,293,959 | 525,242 | (362,769)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Common Stock, Dividends, Per Share, Declared | $ 0.44 |  |  |  |
Net Income (Loss) Attributable to Parent | $ 55,555 |  |  | 55,555 |
Other Comprehensive Income (Loss), Net of Tax | 37,133 |  |  |  | 37,133
Accrual of dividends on common stock | (16,691) |  |  | (16,691) |
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture |  | 114,522 |  |  |
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered | (734) |  | (734) |  |
Balance, end of the period (in shares) at Mar. 31, 2023 |  | 34,308,540 |  |  |
Balance, end of the period at Mar. 31, 2023 | $ 1,531,695 |  | 1,293,225 | 564,106 | (325,636)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Common Stock, Dividends, Per Share, Declared | $ 0.48 |  |  |  |
Balance, beginning of the period (in shares) at Dec. 31, 2022 |  | 34,194,018 |  |  |
Balance, beginning of the period at Dec. 31, 2022 | $ 1,456,432 |  | 1,293,959 | 525,242 | (362,769)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net Income (Loss) Attributable to Parent | 141,000 |  |  |  |
Other Comprehensive Income (Loss), Net of Tax | (30,146) |  |  |  |
Balance, end of the period (in shares) at Sep. 30, 2023 |  | 34,345,949 |  |  |
Balance, end of the period at Sep. 30, 2023 | $ 1,520,607 |  | 1,297,307 | 616,215 | (392,915)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Common Stock, Dividends, Per Share, Declared | $ 1.44 |  |  |  |
Balance, beginning of the period (in shares) at Mar. 31, 2023 |  | 34,308,540 |  |  |
Balance, beginning of the period at Mar. 31, 2023 | $ 1,531,695 |  | 1,293,225 | 564,106 | (325,636)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net Income (Loss) Attributable to Parent | 39,591 |  |  | 39,591 |
Accrual of dividends on common stock | (16,670) |  |  | (16,670) |
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture |  | 36,087 |  |  |
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered | 1,709 |  | 1,709 |  |
Balance, end of the period (in shares) at Jun. 30, 2023 |  | 34,344,627 |  |  |
Balance, end of the period at Jun. 30, 2023 | $ 1,542,513 |  | 1,294,934 | 587,027 | (339,448)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Common Stock, Dividends, Per Share, Declared | $ 0.48 |  |  |  |
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax | $ (13,812) |  |  |  | (13,812)
Net Income (Loss) Attributable to Parent | 45,854 |  |  | 45,854 |
Other Comprehensive Income (Loss), Net of Tax | (53,467) |  |  |  |
Accrual of dividends on common stock | (16,666) |  |  | (16,666) |
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture |  | 1,322 |  |  |
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered | 2,373 |  | 2,373 |  |
Balance, end of the period (in shares) at Sep. 30, 2023 |  | 34,345,949 |  |  |
Balance, end of the period at Sep. 30, 2023 | $ 1,520,607 |  | $ 1,297,307 | $ 616,215 | (392,915)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Common Stock, Dividends, Per Share, Declared | $ 0.48 |  |  |  |
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax | $ (53,467) |  |  |  | $ (53,467)

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