Fair Value Measurements

12 Months Ended

Dec. 31, 2013

The Company uses various inputs in determining the fair value of its investments and measures these assets on a recurring basis. Assets and liabilities recorded at fair value in the consolidated balance sheets are categorized by the level of objectivity associated with the inputs used to measure their fair value. The following levels are directly related to the amount of subjectivity associated with the inputs to fair valuation of these assets and liabilities:


•	Level 1 – quoted prices in active markets for identical assets, which include U.S. treasury securities


•	Level 2 – other significant observable inputs (including quoted prices for similar investments, market corroborated inputs, etc.)


•	Level 3 – significant unobservable inputs (including the Company’s own assumptions in determining the fair value of assets and liabilities)

The inputs or methodology used for valuing securities are not necessarily an indication of the credit risk associated with investing in those securities. The following tables provide the fair value measurements of applicable Company assets and liabilities that are measured at fair value on a recurring basis according to the fair value levels defined above as of December 31, 2013 and 2012.



	Assets and Liabilities at Fair Value
	As of December 31, 2013
	Level 1		Level 2		Level 3		Total
	(in thousands)
Assets
Cash and cash equivalents	$	37,499	$	—	$	—	$	37,499
Short-term investments	91,077		552		—		91,629
Total cash and cash equivalents and investments	$	128,576	$	552	$	—	$	129,128
Liabilities
Other long-term liabilities	$	—	$	—	$	27,710	$	27,710
Total liabilities	$	—	$	—	$	27,710	$	27,710



	Assets and Liabilities at Fair Value
	As of December 31, 2012
	Level 1		Level 2		Level 3		Total
	(in thousands)
Assets
Cash and cash equivalents	$	30,423	$	—	$	—	$	30,423
Short-term investments	192,234		551		—		192,785
Total cash and cash equivalents and investments	$	222,657	$	551	$	—	$	223,208
Liabilities
Other long-term liabilities	$	—	$	—	$	29,920	$	29,920
Total liabilities	$	—	$	—	$	29,920	$	29,920

The Company did not have any Level 3 assets during the years ended December 31, 2013, 2012 and 2011. Transfers between levels are recognized at the actual date of circumstance that caused the transfer. The Company's Level 3 liabilities are estimated using a probability-based income approach utilizing an appropriate discount rate. Subsequent changes in the fair value of the Symphony Icon purchase consideration liability are recorded as an increase or decrease in Symphony Icon purchase liability in the accompanying consolidated statements of comprehensive loss. The fair value of the Symphony Icon ("Symphony Icon") purchase consideration liability decreased by $2.2 million during the year ended December 31, 2013 and increased by $9.9 million and $6.8 million during the years ended December 31, 2012 and 2011, respectively. The following table summarizes the change in consolidated balance sheet carrying value associated with Level 3 liabilities for the years ended December 31, 2011, 2012 and 2013.



	Other Long-term Liabilities
	(in thousands)
Balance at December 31, 2010	$	48,267
Change in valuation of purchase consideration payable to former Symphony Icon stockholders	6,766
Balance at December 31, 2011	55,033
Change in valuation of purchase consideration payable to former Symphony Icon stockholders	9,887
Payment of base payment obligation with common stock	(35,000		)
Balance at December 31, 2012	29,920
Change in valuation of purchase consideration payable to former Symphony Icon stockholders	(2,210		)
Balance at December 31, 2013	$	27,710

The Company also has assets that under certain conditions are subject to measurement at fair value on a non-recurring basis. These assets include goodwill associated with the acquisitions of Coelacanth Corporation in 2001 and Symphony Icon on July 30, 2010 and intangible assets associated with the acquisition of Symphony Icon on July 30, 2010. For these assets, measurement at fair value in periods subsequent to their initial recognition is applicable if one or more is determined to be impaired.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

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