Earnings per Share (Tables)

9 Months Ended

Sep. 30, 2016

Schedule of Earnings Per Share, Basic and Diluted

The following table sets forth the computation of basic and diluted earnings per common share for the three and nine months ended September 30, 2016 and 2015 (in thousands, except per share amounts):



	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2016		2015		2016		2015
Numerator:
Net income	$	56,785	$	63,362	$	132,203	$	140,103
Denominators:
Weighted average Class A common shares outstanding – Basic	57,266		56,819		57,160		56,673
Weighted average Class B common shares outstanding	793		828		793		915
Dilutive effect of employee stock-based awards	121		199		130		245
Weighted average shares – Diluted	58,180		57,846		58,083		57,833

Basic earnings per common share	$	0.99	$	1.12	$	2.31	$	2.47
Diluted earnings per common share	$	0.98	$	1.10	$	2.28	$	2.42

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following total number of Class A Common Stock shares issuable under the assumed exercise of stock-based awards computed based on the treasury stock method were excluded from the calculation of diluted earnings per common share, as the effect of including these shares would have been antidilutive (in thousands):



	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2016	2015	2016	2015
Antidilutive shares	1,174	772	1,292	652