Fair value of financial instruments (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of financial assets recorded at fair value

The following tables set forth the Company's financial assets that were recorded at fair value at December 31, 2012 (in thousands):

Description	Balance as of December 31, 2012		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Other Unobservable Inputs (Level 3)

Assets:
Cash equivalents	$	13,268	$	13,268	$	—	$	—
Marketable securities:
Corporate debt securities		16,615		—		16,615		—

Total	$	29,883	$	13,268	$	16,615	$	—

- Definition

Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

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