Net Income (Loss) Per Share (Tables)

9 Months Ended

Sep. 30, 2013

Earnings Per Share [Abstract]

Reconciliation of Shares Used in Calculating Basic and Diluted Earnings Per Share

A reconciliation of shares used in calculating basic and diluted earnings per share follows:

	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2013	2012	2013	2012
Basic	54,046,161	55,688,824	54,898,974	55,087,109
Effect of assumed exercised options	—	2,072,044	—	1,900,193
Diluted	54,046,161	57,760,868	54,898,974	56,987,302