Basic earnings per common share are computed by dividing net income available to common stockholders by the weighted average number of common shares outstanding during the period. Diluted earnings per common share include the dilutive effect of additional potential common shares issuable under stock options.

 

		Year Ended December 31,
		2017				2016				2015
		(Dollar Amounts In Thousands Except Per Share Amounts)
Earnings Per Share
Weighted average common shares outstanding			52,887,359				52,450,896				51,426,466
Net income available to common stockholders		$	93,030			$	81,432			$	63,260
Basic earnings per common share		$	1.76				1.55			$	1.23
Weighted average common shares outstanding			52,887,359				52,450,896				51,426,466
Dilutive effects of assumed conversions and exercise of stock options and warrants			1,236,598				1,157,476				1,458,642
Weighted average common and dilutive potential common shares outstanding			54,123,957				53,608,372				52,885,108
Net income available to common stockholders		$	93,030			$	81,432			$	63,260
Diluted earnings per common share		$	1.72			$	1.52			$	1.20