Fair Value Measurement (Tables)

12 Months Ended

Dec. 31, 2013

Fair Value, Assets Measured on Recurring Basis

The following table shows our cash and available-for-sale securities adjusted cost, gross unrealized gains, gross unrealized losses and fair value by significant investment category recorded as cash and cash equivalents of investments available for sale as of December 31, 2013 and 2012 respectively (in thousands):

	December 31, 2013
										Cash		Investments
	Adjusted		Unrealized		Unrealized			Fair		and Cash		Available
	Cost		Gains		Losses			Value		Equivalents		for Sale
Cash	$	11,699	$	-	$	-		$	11,699	$	11,699	$	-

Level 1:
Mutual funds		73		-		-			73		73		-
Corporate securities		10,782		-		-			10,782		2,325		8,457
Municipal securities		2,173		-		-			2,173		665		1,508
U.S agency securities		14,287		-		(25	)		14,262		4,411		9,851
		27,315		-		(25	)		27,289		7,474		19,815
Total	$	39,014	$	-	$	(25	)	$	38,988	$	19,173	$	19,815

	December 31, 2012
									Cash		Investments
	Adjusted		Unrealized		Unrealized		Fair		and Cash		Available
	Cost		Gains		Losses		Value		Equivalents		for Sale
Cash	$	19,661	$	-	$	-	$	19,661	$	19,661	$	-

Level 1:
Certificates of deposit		17,836		-		-		17,836		-		17,836
Corporate securities		8,649		8		-		8,657		-		8,657
		26,485		8		-		26,493		-		26,493
Total	$	46,146	$	8	$	-	$	46,154	$	19,661	$	26,493

Fair Value, Liabilities Measured on Recurring Basis

The following table sets forth, by level within the fair value hierarchy, our financial instrument liabilities as of December 31, 2013 (in thousands):

	Quoted Prices in Active Markets for Identical Assets			Significant Other Observable Inputs			Significant Unobservable Inputs
	(Level 1)			(Level 2)			(Level 3)			Total
Series l Warrants		$	—		$	—		$	2,564		$	2,564
Total		$	—		$	—		$	2,564		$	2,564

The following table sets forth, by level within the fair value hierarchy, our financial instrument liabilities as of December 31, 2012 (in thousands):

	Quoted Prices in Active Markets for Identical Assets			Significant Other Observable Inputs			Significant Unobservable Inputs
	(Level 1)			(Level 2)			(Level 3)			Total
Series l Warrants		$	—		$	—		$	4,172		$	4,172
Total		$	—		$	—		$	4,172		$	4,172

Summary of Changes in Fair Value of Level 3 Liabilities

The following table sets forth a summary of changes in the fair value of our Level 3 financial instrument liability for the year ended December 31, 2013, 2012 and 2011 (in thousands):

	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
	Year ended December 31, 2013			Year ended December 31, 2012			Year ended December 31, 2011
Beginning Balance	$	4,172		$	4,699		$	14,364
(Gain) losses included in losses		(1,608	)		927			5,595
Settlements		—			(1,454	)		(15,260	)
Ending Balance	$	2,564		$	4,172		$	4,699

- Definition

Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

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- Definition

Tabular disclosure of liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset.

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- Definition

Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability.

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