Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2016

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				For the nine months
	ended September 30,				ended September 30,
	2016		2015		2016		2015
Numerator:
Net (loss) income	$	(15,370)	$	(155,946)	$	70,976	$	(206,673)
Denominator:
Basic weighted-average shares outstanding		124,604		127,170		125,041		128,397
Dilutive impact of stock options and restricted shares		—		—		720		—
Diluted weighted-average shares outstanding		124,604		127,170		125,761		128,397
Net (loss) income per common share:
Basic	$	(0.12)	$	(1.23)	$	0.57	$	(1.61)
Diluted	$	(0.12)	$	(1.23)	$	0.56	$	(1.61)