Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2012

Fair Value Disclosures [Abstract]

Assets and liabilities measured at fair value on a recurring basis

The Company’s assets and liabilities measured at fair value on a recurring basis consisted of the following as of the date indicated:

	Fair Value Measurement as of June 30, 2012
	Total		Level 1		Level 2		Level 3
	(in thousands)
Cash and Cash equivalents	$	24,491	$	24,491	$	—	$	—
Total assets	$	24,491	$	24,491	$	—	$	—

	Fair Value Measurement as of June 30, 2012
	Total		Level 1		Level 2		Level 3
	(in thousands)
Warrants*	$	2,884	$	—	$	—	$	2,884
Total liabilities	$	2,884	$	—	$	—	$	2,884

	Fair Value Measurement as of December 31, 2011
	Total		Level 1		Level 2		Level 3
	(in thousands)
Cash and Cash equivalents	$	39,904	$	39,904	$	—	$	—
Total assets	$	39,904	$	39,904	$	—	$	—

	Fair Value Measurement as of December 31, 2011
	Total		Level 1		Level 2		Level 3
	(in thousands)
Warrants*	$	5,446	$	—	$	—	$	5,446
Total liabilities	$	5,446	$	—	$	—	$	5,446

* See Note 5 —“Warrants” for additional information related to the determination of fair value of the warrants and a reconciliation of changes in fair value.