Note 8 —Loss Per Share

The following table is a reconciliation of the weighted average shares used in the computation of loss per share for the periods presented (in thousands, except per share data):

	Three Months Ended March 31,
	2012						2013
	Loss		Weighted Average Shares		Per-Share		Loss		Weighted Average Shares		Per- Share
Loss per share – basic
Net loss available to common stockholders	$	(16,000)		25,831	$	(0.62)	$	(27,562)		21,873		$	(1.26)
Effect of dilutive securities:
Convertible senior notes		–						–
Options and warrants		–						–
Unvested restricted stock grants		–						–
Loss per share – diluted
Loss available to common stockholders plus assumed exercises and conversion	$	(16,000)		25,831	$	(0.62)	$	(27,562)		21,873		$	(1.26)

Basic earnings per share is calculated using the weighted average number of common shares outstanding during the period. Diluted earnings per share is calculated using the weighted average number of common shares and common share equivalents outstanding during the period (which consist of warrants, options and convertible debt to the extent they are dilutive). Common share equivalents that could potentially dilute basic earnings per share in the future, which were excluded from the computation of diluted loss per share, totaled approximately 240,265 and 417,207 for the three months ended March 31, 2012 and 2013, respectively.