Earnings Per Share

3 Months Ended

Mar. 31, 2015

8. Earnings Per Share

Basic earnings per share includes no dilution and is computed by dividing net income available to common stockholders by the weighted average number of common shares outstanding for the period. Diluted earnings per share reflect, in periods in which they have a dilutive effect, the effect of restricted stock-based awards, common shares issuable upon exercise of stock options and warrants and shares underlying convertible notes potentially issuable upon conversion. The difference between basic and diluted weighted-average common shares results from the assumption that all dilutive stock options outstanding were exercised and all convertible notes have been converted into common stock.

As of March 31, 2015 and March 31, 2014, of the total potentially dilutive shares related to restricted stock-based awards, stock options and warrants, less than 0.1 million were anti-dilutive.

As of March 31, 2015 and March 31, 2014, none of the performance related restricted stock-based awards issued in connection with the Company’s named executive officers were anti-dilutive.

As of March 31, 2015, warrants issued in connection with the Company’s 1.50% Convertible Notes financing and 2.50% Convertible Notes financing were anti-dilutive and therefore were not included in this calculation. As of March 31, 2014, warrants issued in connection with the Company’s 1.50% Convertible Notes financing and 2.50% Convertible Notes financing were dilutive and therefore were included in this calculation.

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


	For the Three Months Ended March 31, (unaudited)
	2015		2014
Basic		48,158		49,522
Effect of exercise of stock options		99		1,117
Effect of assumed vesting of restricted stock		1,304		1,382
Effect of convertible notes subject to conversion		2,348		4,893
Effect of convertible notes warrants subject to conversion		—		1,137
Diluted		51,909		58,051

See Note 6 for discussion of hedges related to our convertible notes.