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Net Income per Common Share (Tables)
 9 Months Ended
Sep. 30, 2022
Earnings Per Share [Abstract]  
Schedule of calculation of net income per common share
The calculation of net income per common share for the three and nine months ended September 30, 2022 and 2021 was as follows:
Three Months Ended September 30,Nine Months Ended September 30,
(dollars and shares in thousands, except per share data)2022202120222021
Basic:
Net income$37,297 $43,609 $98,737 $135,071 
Average common shares outstanding32,084 31,959 32,066 31,931 
Basic net income per common share$1.16 $1.36 $3.08 $4.23 
Diluted:
Net income$37,297 $43,609 $98,737 $135,071 
Average common shares outstanding32,084 31,959 32,066 31,931 
Adjustment for common share equivalents71 72 72 62 
Average common shares outstanding-diluted32,155 32,031 32,138 31,993 
Diluted net income per common share$1.16 $1.36 $3.07 $4.22 
Anti-dilutive shares3 3 — 3