Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2011

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table presents information about the Company’s assets and liabilities as of December 31, 2011 and 2010 that are measured at fair value on a recurring basis and indicates the fair value hierarchy of the valuation techniques the Company utilized to determine such fair value:

	December 31, 2011
In thousands	Total		Level 1		Level 2		Level 3
Warrant liability	$	58,639	$	---	$	58,639	$	---

	December 31, 2010
In thousands	Total		Level 1		Level 2		Level 3
Warrant liability	$	28,815	$	---	$	---	$	28,815

Fair Value of the Warrants Determined Using the Black-Scholes Option Valuation Model

The fair value of the warrants is determined using the Black-Scholes option valuation model, applying the following inputs as of December 31, 2011, 2010 and 2009:

	2011			2010			2009
Market price per share of the Company’s common stock	$	12.25		$	5.10		$	2.28
Risk-free interest rate		0.015	%		0.34	%		1.23	%
Expected term (years)		0.2			1.2			2.2
Dividend yield		---			---			---
Volatility		59.9	%		54.0	%		79.0	%

Changes in the Fair Value of Warrant Liability

The changes in the fair value of the warrant liability for the years ended December 31, 2011, 2010 and 2009 were as follows:

In thousands	2011			2010			2009
Balance, beginning of year	$	28,815		$	11,363		$	---
Issuance of warrants		---			---			3,559
Revaluation of warrants		46,715			19,532			7,804
Exercise of warrants		(16,891	)		(2,080	)		---
Balance, end of year	$	58,639		$	28,815		$	11,363