Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

Calculation of Basic and Diluted Weighted Average Shares Outstanding Earnings Per Share

The following table sets forth the calculation of basic and diluted weighted average shares outstanding and earnings per share for the indicated periods:

	Three Months Ended March 31,
	2014			2013
Income (numerator):
Basic:
Net income	$	25,943		$	40,758
Net income attributable to participating securities		(537	)		(770	)
Net income attributable to common stock — basic	$	25,406		$	39,988
Diluted:
Net income	$	25,943		$	40,758
Net income attributable to participating securities		(537	)		(770	)
Net income attributable to common stock — diluted	$	25,406		$	39,988
Weighted average shares (denominator):
Weighted average shares — basic		49,013			48,619
Dilutive effect of stock options		49			38
Weighted average shares — diluted		49,062			48,657
Basic earnings per share	$	0.52		$	0.82
Diluted earnings per share	$	0.52		$	0.82