Earnings per Share (Tables)

9 Months Ended

Sep. 30, 2015

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings per Share

The following table sets forth the computation of basic and diluted earnings per share for the three and nine month periods ended September 30, 2015 and 2014.

	Three Months Ended September 30,				Nine Months Ended September 30,
	2015		2014		2015		2014
Net income	$	20,162	$	19,155	$	63,364	$	61,625
Weighted average common shares outstanding for basic earnings per share computation	45,150,104		44,911,858		45,223,988		44,321,326
Dilutive effects of stock-based compensation	428,874		548,430		481,636		562,667
Weighted average common shares outstanding for diluted earnings per common share computation	45,578,978		45,460,288		45,705,624		44,883,993
Basic earnings per common share	$	0.45	$	0.43	$	1.40	$	1.39
Diluted earnings per common share	$	0.44	$	0.42	$	1.39	$	1.37