Short-Term Investments and Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2014

Short-Term Investments and Fair Value Measurements

	As of September 30, 2014
	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Market Value
Commercial paper	$	49,722	$	—	$	(2	)	$	49,720
Total	$	49,722	$	—	$	(2	)	$	49,720

	As of December 31, 2013
	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Market Value
Commercial paper	$	54,431	$	—	$	(2	)	$	54,429
Total	$	54,431	$	—	$	(2	)	$	54,429

Schedule of fair value measurements

	As of September 30, 2014
	Aggregate Fair Value		Level 1		Level 2		Level 3
Assets:
Money market accounts	$	86,342	$	86,342	$	—	$	—
Commercial paper	49,720		—		49,720		—
Total assets measured at fair value	$	136,062	$	86,342	$	49,720	$	—
Liabilities:
Acquisition related contingent consideration	$	2,470	$	—	$	—	$	2,470
Total liabilities measured at fair value	$	2,470	$	—	$	—	$	2,470

	As of December 31, 2013
	Aggregate Fair Value		Level 1		Level 2		Level 3
Assets:
Money market accounts	$	81,548	$	81,548	$	—	$	—
Commercial paper	54,429		—		54,429		—
Total assets measured at fair value	$	135,977	$	81,548	$	54,429	$	—

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References+ Details

- Definition

Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances.

+ References+ Details