Net Income Per Common Share

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Net Income Per Common Share

(8) NET INCOME PER COMMON SHARE

Basic and diluted net income per common share based on weighted-average shares outstanding are calculated as follows:

	Income (Numerator)		Shares (Denominator)		Per Share Amount
	(Dollars in thousands, except per share data)
Three Months Ended March 31, 2018
Basic
Income available to common stockholders	$	29,620		32,574,251	$	0.91
Dilutive effect of stock options		—		743,493
Diluted
Income available to common stockholders plus assumed    exercises of stock options	$	29,620		33,317,744	$	0.89
Three Months Ended March 31, 2017
Basic
Income available to common stockholders	$	22,050		31,729,614	$	0.70
Dilutive effect of stock options		—		746,382
Diluted
Income available to common stockholders plus assumed    exercises of stock options	$	22,050		32,475,996	$	0.68

The following table shows the number of options that were excluded from the computation of diluted net income per common share for each period because the options’ exercise prices were greater than the average market price of the common shares:

	Shares
Three Months Ended March 31, 2018		113,278
Three Months Ended March 31, 2017		—