Net Income Per Common Share

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Net Income Per Common Share

(16) NET INCOME PER COMMON SHARE

Basic and diluted net income per common share are calculated as follows:

	Income (Numerator)		Shares (Denominator)		Per Share Amount
	(Dollars in thousands, except per share data)
Year Ended December 31, 2020
Basic
Income available to common stockholders	$	99,586		32,672,522	$	3.05
Dilutive effect of stock options		—		538,430
Diluted
Income available to common stockholders plus assumed    exercises of stock options	$	99,586		33,210,952	$	3.00
Year Ended December 31, 2019
Basic
Income available to common stockholders	$	134,879		32,639,396	$	4.13
Dilutive effect of stock options		—		690,448
Diluted
Income available to common stockholders plus assumed    exercises of stock options	$	134,879		33,329,844	$	4.05
Year Ended December 31, 2018
Basic
Income available to common stockholders	$	125,814		32,689,228	$	3.85
Dilutive effect of stock options		—		741,486
Diluted
Income available to common stockholders plus assumed    exercises of stock options	$	125,814		33,430,714	$	3.76

The following table shows the number and average exercise price of options that were excluded from the computation of diluted net income per common share for each year because the options were anti-dilutive for the period.

	Shares		Average Exercise Price
December 31, 2020		402,575	$	52.72
December 31, 2019		180,989		54.73
December 31, 2018		92,738		53.17