Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2014

Schedule of assets and liabilities measured at fair value on a recurring basis

The following tables represent the fair value hierarchy as of June 30, 2014 and December 31, 2013 for those assets and liabilities that we measure at fair value on a recurring basis (in thousands):

	Fair Value Measurements at June 30, 2014 Using:
			Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
	Total		(Level 1)		(Level 2)		(Level 3)
Assets:
Money market funds	$	196,826	$	196,826	$	—	$	—
Corporate debt securities	131,274		—		131,274		—
U.S. treasury and government agency securities	51,642		—		51,642		—
Commercial paper	1,500		—		1,500		—
Total Assets	$	381,242	$	196,826	$	184,416	$	—
Liabilities:
Acquisition-related contingent consideration	$	15,741	—		—		15,741
Total Liabilities	$	15,741	$	—	$	—	$	15,741

	Fair Value Measurements at December 31, 2013 Using:
			Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
	Total		(Level 1)		(Level 2)		(Level 3)
Assets:
Money market funds	$	18,767	$	18,767	$	—	$	—
Corporate debt securities	134,123		—		134,123		—
U.S. treasury and government agency securities	52,680		—		52,680		—
Total Assets	$	205,570	$	18,767	$	186,803	$	—
Liabilities:
Acquisition-related contingent consideration	$	14,550	$	—	$	—	$	14,550
Total Liabilities	$	14,550	$	—	$	—	$	14,550

Schedule of reconciliation of contingent consideration obligations related to acquisition of MuGard rights measured on recurring basis using Level 3 inputs

The following table presents a reconciliation of contingent consideration obligations related to our acquisition of the MuGard Rights measured on a recurring basis using Level 3 inputs as of June 30, 2014 (in thousands):

Balance as of December 31, 2013	$	14,550
Payments made	(90		)
Adjustments to fair value of contingent consideration	1,178
Other adjustments	103
Balance as of June 30, 2014	$	15,741

- 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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