Fair Value Measurements

6 Months Ended

Jun. 30, 2014

The Company holds certain of its cash and cash equivalents in money market funds, asset-backed securities and commercial paper. The Company measures the fair value of money market funds using quoted prices in active markets for identical assets or liabilities. The Company measures the fair value of the asset-backed securities and the commercial paper based on other significant observable inputs available at the measurement date. The following table summarizes, by major security type, the Company's cash and cash equivalents that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy (in thousands):



	June 30, 2014		December 31, 2013
Level 1 Securities:
Money market fund deposits	$	12,868	$	18,275
Level 2 Securities:
Asset-backed securities	4,208		—
Commercial paper	1,200		—
Total	$	18,276	$	18,275

- 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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