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Net Income per Common Share (Tables)
 6 Months Ended
Jun. 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 six months ended June 30, 2022 and 2021 was as follows:
Three Months Ended June 30,Six Months Ended June 30,
(dollars and shares in thousands, except per share data)2022202120222021
Basic:
Net income$15,696 $47,993 $61,440 $91,462 
Average common shares outstanding32,081 31,963 32,057 31,916 
Basic net income per common share$0.49 $1.50 $1.92 $2.87 
Diluted:
Net income$15,696 $47,993 $61,440 $91,462 
Average common shares outstanding32,081 31,963 32,057 31,916 
Adjustment for common share equivalents62 62 69 58 
Average common shares outstanding-diluted32,143 32,025 32,126 31,974 
Diluted net income per common share$0.49 $1.50 $1.91 $2.86 
Anti-dilutive shares— 3 — 3