Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2015

Earnings Per Share [Abstract]

Schedule of earnings (loss) per share, basic and diluted

The following is a reconciliation of the calculation of basic and diluted earnings per share (in thousands, except share and per share data):

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Numerator:
Net income	$	24,822	$	51,916	$	35,464	$	55,953
Denominator:
Weighted-average number of common shares outstanding—basic	200,830,064		195,776,924		200,738,301		195,700,864
Effect of dilutive securities:
Unvested restricted common stock	80,538		134,737		143,882		181,803
Unexercised stock appreciation rights	1,425		—		2,212		—
Shares related to unvested PSUs	230,720		335,057		230,720		335,057
Weighted-average number of common shares outstanding—diluted	201,142,747		196,246,718		201,115,115		196,217,724
Earnings per share:
Basic earnings per share	$	0.12	$	0.27	$	0.18	$	0.29
Diluted earnings per share	$	0.12	$	0.26	$	0.18	$	0.29