Earnings Per Share

The following table details the reconciliation of basic earnings per share to diluted earnings per share:



	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
			As Adjusted				As Adjusted
Numerator for basic and diluted earnings per share:
Net income	$	38,924	$	38,836	$	115,910	$	103,375
Denominator:
Weighted-average basic common shares outstanding	38,761		37,391		38,533		37,238
Assumed conversion of dilutive securities:
Stock options	1,767		1,951		1,812		2,028
Denominator for diluted earnings per share - Adjusted weighted-average shares	40,528		39,342		40,345		39,266
Earnings per common share:
Basic	$	1.00	$	1.04	$	3.01	$	2.78
Diluted	$	0.96	$	0.99	$	2.87	$	2.63

For the three and nine months ended September 30, 2018, stock options representing the right to purchase common stock of approximately 350,000 and 734,000 shares were not included in the computation of diluted earnings per share because their inclusion would have had an anti-dilutive effect. For the three and nine months ended September 30, 2017, stock options representing the right to purchase common stock of approximately 1,499,000 and 1,303,000 shares were not included in the computation of diluted earnings per share because their inclusion would have had an anti-dilutive effect.