Fair value measurements (Tables)

9 Months Ended

Sep. 30, 2014

Recorded Amount of Assets and Liabilities Measured at Fair Value on Recurring Basis

The following table sets forth the Company’s assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2014 and December 31, 2013:

Description	Total		Quoted prices in active markets (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)
September 30, 2014
Assets:
Cash and cash equivalents	$	89,603	$	89,363	$	240	$	—
Marketable securities:
U.S. government agency securities		161,607		—		161,607		—
Certificates of deposit		12,610		—		12,610		—
Total assets	$	263,820	$	89,363	$	174,457	$	—
Liabilities:
Contingent consideration	$	6,628	$	—	$	—	$	6,628
Total liabilities	$	6,628	$	—	$	—	$	6,628
December 31, 2013
Total cash and cash equivalents	$	206,279	$	206,279	$	—	$	—

Roll-Forward of Fair Value of the Company's Contingent Consideration Obligations

The table below provides a roll-forward of fair value of the Company’s contingent consideration obligations which include Level 3 inputs:

	Nine months ended September 30, 2014
Beginning balance	$	—
Additions		6,550
Changes in fair value		78
Payments		—
Ending balance	$	6,628

- 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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