Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Weighted-Average Shares of Common Stock Outstanding used in Calculation of Basic and Diluted Earnings Per Share

	For the three months
	ended March 31,
	2018		2017
Numerator:
Net income	$	31,545	$	37,598
Denominator:
Basic weighted-average shares outstanding		116,494		121,049
Dilutive impact of stock options and restricted shares		1,799		685
Diluted weighted-average shares outstanding		118,293		121,734
Net income per common share:
Basic	$	0.27	$	0.31
Diluted	$	0.27	$	0.31