Earnings Per Share

The following table sets forth the computation of earnings per common share and earnings per common share - assuming dilution:



	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
	(Dollars in thousands, except share and per share data)
Numerator:
Net income - numerator for earnings per common share	$	93,903	$	26,946	$	234,865	$	80,885

Denominator:
Weighted average common shares outstanding	90,326,747		88,897,203		90,172,812		88,772,831
Effect of dilutive securities:
Stock options and deferred compensation agreements	696,007		850,870		773,149		899,594
Restricted stock and restricted stock units	248,094		364,211		259,992		372,214
Denominator for earnings per common share - assuming dilution	91,270,848		90,112,284		91,205,953		90,044,639

Earnings per common share	$	1.04	$	0.30	$	2.60	$	0.91
Earnings per common share - assuming dilution	$	1.03	$	0.30	$	2.58	$	0.90

There were no options to purchase shares of our common stock outstanding excluded from the computation of diluted earnings per share during the three and six months ended June 30, 2018, as the exercise price of all options outstanding was less than the average market price of our common shares for those periods. During the three and six months ended June 30, 2017, there were 1,002,391 options to purchase shares of our common stock outstanding, with an exercise price of $24.79, excluded from the computation of diluted earnings per share.