Earnings per Common Share

The calculation of basic and diluted EPS was as follows:



	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
	(In thousands, except per share data)
Basic earnings per Class A common share
Numerator:
Net income	$	4,573	$	13,639	$	104,431	$	73,659
Denominator:
Weighted-average Class A shares issued and outstanding	52,580		50,519		52,046		50,330
Basic earnings per Class A common share	$	0.09	$	0.27	$	2.01	$	1.46

Diluted earnings per Class A common share
Numerator:
Net income	$	4,573	$	13,639	$	104,431	$	73,659
Denominator:
Weighted-average Class A shares issued and outstanding	52,580		50,519		52,046		50,330
Dilutive potential common shares:
Stock options	214		790		372		764
Restricted stock units	1,032		1,292		1,223		1,404
Performance based restricted stock units	780		306		791		282
Employee stock purchase plan	9		16		5		8
Diluted weighted-average Class A shares issued and outstanding	54,615		52,923		54,437		52,788
Diluted earnings per Class A common share	$	0.08	$	0.26	$	1.92	$	1.40

For the periods presented, we excluded certain restricted stock units and stock options outstanding (as applicable) which could potentially dilute basic EPS in the future, from the computation of diluted EPS as their effect was anti-dilutive. Additionally, we have excluded any performance based restricted stock units for which the performance contingency has not been met as of the end of the period. The following table shows the weighted-average number of shares excluded from the diluted EPS calculation:



	Three Months Ended September 30,		Nine Months Ended September 30,
	2018	2017	2018	2017
	(In thousands)
Class A common stock
Options to purchase Class A common stock	—	56	—	9
Performance based restricted stock units	223	539	123	301
Total options and restricted stock units	223	595	123	310