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Earnings Per Share (Tables)
12 Months Ended
Dec. 31, 2022
Earnings Per Share [Abstract]  
Net Income Per Share
The following table presents the computation of basic and diluted net earnings (loss) per share for the years indicated:
 Year Ended December 31,
202220212020
 (Dollars in thousands, except per share data)
Basic Earnings (Loss) Per Share:
Net earnings (loss) $423,613 $606,959 $(1,237,574)
Less: Preferred stock dividends(19,339)— — 
Net earnings available to common stockholders404,274 606,959 (1,237,574)
Less: earnings allocated to unvested restricted stock(1)
(7,474)(10,248)(1,782)
Net earnings (loss) allocated to common shares$396,800 $596,711 $(1,239,356)
Weighted-average basic shares and unvested restricted stock outstanding120,071 119,349 118,463 
Less: weighted-average unvested restricted stock outstanding(2,442)(2,255)(1,610)
Weighted-average basic shares outstanding117,629 117,094 116,853 
Basic earnings (loss) per share$3.37 $5.10 $(10.61)
Diluted Earnings (Loss) Per Share:
Net earnings (loss) allocated to common shares$396,800 $596,711 $(1,239,356)
Weighted-average diluted shares outstanding117,629 117,094 116,853 
Diluted earnings (loss) per share$3.37 $5.10 $(10.61)
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(1)    Represents cash dividends paid to holders of unvested restricted stock, net of forfeitures, plus undistributed earnings amounts available to holders of unvested restricted stock, if any.