Exhibit 11.1

Computation of Loss Per Share

(Amounts in thousands except per share amounts)

Basic loss per common share for the fiscal years ended December 31, 2012, 2011 and 2010 are as follows:

	Years ended December 31,
	2012			2011			2010
Net loss	$	(18,222	)	$	(22,872	)	$	(4,609	)
Weighted average common shares outstanding		33,130			27,911			22,162
Basic loss per common share	$	(0.55	)	$	(0.82	)	$	(0.21	)

Diluted loss per common share for the fiscal years ended December 31, 2012, 2011 and 2010 are as follows:

	Years ended December 31,
	2012			2011			2010
Net loss	$	(18,222	)	$	(22,872	)	$	(4,609	)
Weighted average common shares outstanding		33,130			27,911			22,162
Dilutive securities (1)(2)(3)		—			—			—
Diluted average common shares outstanding		33,130			22,911			22,162
Diluted loss per common share (1)(2)(3)	$	(0.55	)	$	(0.82	)	$	(0.21	)

(1) For purposes of calculating the dilutive loss per common share for the years ended December 31, 2012, 2011 and 2010, the assumed exercise of dilutive securities (in-the-money stock options) is not taken into consideration, as its effect is anti-dilutive. Had these been exercised zero, 0.5 million, and 0.1 million additional shares of common stock would have been assumed outstanding for each of the years in the years ended December 31, 2012, 2011 and 2010, respectively.

(2) For purposes of calculating the dilutive loss per common share for the years ended December 31, 2012, 2011 and 2010, the assumed conversion of the 5.45% Convertible Notes due 2011 and the 5.45% Convertible Notes due 2010 is not taken into consideration as their effect is anti-dilutive. Had the 5.45% Convertible Notes due 2011 and the 5.45% Convertible Notes due 2010 been converted, zero, zero, and 0.5 million additional shares of common stock would have been assumed outstanding for each of the years in the years ended December 31, 2012, 2011 and 2010, respectively.

(3) For purposes of calculating the dilutive loss per common share for the years ended December 31, 2012, 2011 and 2010, the assumed release or dilutive restricted stock units is not taken into consideration as their effect is anti-dilutive. Had the restricted stock units been released, 1.7 million, 1.6 million, and 1.5 million additional shares of common stock would have been assumed outstanding for each of the years in the years ended December 31, 2012, 2011 and 2010, respectively.