Net Income (Loss) Per Common Share (Tables)

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

Schedule of Potentially Dilutive Securities

Outstanding securities, and the number of potentially dilutive common shares underlying such securities, were as follows:

	June 30,
	2013		2012
Stock options		7,049		7,348
Convertible Notes		5,050		5,050
Restricted stock units		446		250
Stock appreciation rights		442		—
Performance shares		—		84
Warrants		46		46
Total		13,033		12,778