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Net Income per Common Share (Tables)
12 Months Ended
Dec. 31, 2021
Earnings Per Share [Abstract]  
Schedule of calculation of net income per common share
The calculation of net income per common share for the years ended December 31 was as follows:
(dollars and shares in thousands, except per share data)202120202019
Basic:      
Net income$176,691 $132,217 $142,943 
Average common shares outstanding31,936 32,334 34,179 
Basic net income per common share$5.53 $4.09 $4.18 
Diluted:
Net income$176,691 $132,217 $142,943 
Average common shares outstanding31,936 32,334 34,179 
Adjustment for common share equivalents67 28 32 
Average common shares outstanding-diluted32,003 32,362 34,211 
Diluted net income per common share$5.52 $4.09 $4.18 
Anti-dilutive shares26