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Earnings per Share
9 Months Ended
Sep. 30, 2023
Earnings Per Share [Abstract]  
Earnings Per Share Earnings per Share
The following table sets forth the computation of basic and diluted earnings per share. For additional information on the calculation of basic and diluted earnings per share, see Note 1, "Summary of Significant Accounting Policies - Earnings per Share" of the Corporation's Annual Report on Form 10-K for the year ended December 31, 2022.
Three Months EndedNine Months Ended
 September 30,September 30,
(Dollars and shares in thousands, except per share data)2023202220232022
Numerator for basic and diluted earnings per share—net income available to common shareholders
$17,016 $20,801 $54,850 $54,284 
Denominator for basic earnings per share—weighted-average shares outstanding
29,479 29,291 29,411 29,440 
Effect of dilutive securities—stock options and restricted stock units79 141 95 148 
Denominator for diluted earnings per share—adjusted weighted-average shares outstanding
29,558 29,432 29,506 29,588 
Basic earnings per share$0.58 $0.71 $1.86 $1.85 
Diluted earnings per share$0.58 $0.71 $1.86 $1.84 
Average antidilutive options and restricted stock units excluded from computation of diluted earnings per share540 250 432 250