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Earnings Per Common Share (Tables)
 3 Months Ended
Mar. 31, 2021
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] The calculations of earnings per common share and diluted earnings per common share for the three months ended March 31, 2021 and 2020 are presented in the following table.
Three Months Ended March 31,
(in thousands, except per share data)20212020
Net income$11,752 $8,089 
 
Weighted average common shares outstanding16,475 16,386 
Weighted average effect of restricted stock units outstanding
226 131 
Diluted weighted average common shares outstanding16,701 16,517 
   
Basic earnings per common share$0.71 $0.49 
Diluted earnings per common share$0.70 $0.49 
Number of anti-dilutive common stock equivalents excluded from diluted earnings per share computation
67 157