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Earnings Per Share
 12 Months Ended
Dec. 31, 2022
Earnings Per Share [Abstract]  
Earnings Per Share EARNINGS PER SHARE
The factors used in the earnings per share computation follow:
Year Ended December 31,
(Dollars in thousands)202220212020
Basic
Net income to common stockholders$99,105 $109,768 $62,323 
Weighted average common shares outstanding24,393,954 24,736,713 24,387,932 
Basic earnings per common share$4.06 $4.44 $2.56 
Diluted
Net income to common stockholders$99,105 $109,768 $62,323 
Weighted average common shares outstanding24,393,954 24,736,713 24,387,932 
Dilutive effects of:
Assumed exercises of stock options90,841 130,198 64,104 
Restricted stock awards148,630 170,276 86,498 
Restricted stock units98,139 76,049 25,978 
Performance stock units - market based122,123 136,199 51,304 
Performance stock units - performance based167,187 — — 
Employee stock purchase plan2,694 2,617 — 
Average shares and dilutive potential common shares25,023,568 25,252,052 24,615,816 
Diluted earnings per common share$3.96 $4.35 $2.53 
Shares that were not considered in computing diluted earnings per common share because they were antidilutive or have not met the thresholds to be considered in the dilutive calculation are as follows:
Year Ended December 31,
202220212020
Stock options49,379 16,939 64,947 
Restricted stock awards6,348 8,463 — 
Restricted stock units11,250 15,000 — 
Performance stock units - market based45,296 — — 
Performance stock units - performance based— 259,383 256,625 
Employee stock purchase plan— — —