Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2013

Schedule of Earnings Per Share, Basic and Diluted

The following table presents the weighted-average number of common shares outstanding used in the calculation of basic and diluted earnings (loss) per share:



	Three Months Ended June 30,		Six Months Ended June 30,
	2013	2012	2013	2012

Weighted-average common shares outstanding - basic	48,008,998	47,944,193	47,934,810	46,155,846
Dilutive effect of equity-based incentive awards	—	994,573	—	1,052,259
Weighted-average common shares outstanding - diluted	48,008,998	48,938,766	47,934,810	47,208,105

Anti-dilutive equity-based incentive awards excluded from the computation of diluted income (loss) per share	958,727	54,260	960,622	34,260