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Financial Instruments and Fair Value Measurement (Tables)

6 Months Ended

Jun. 30, 2012

Financial Instruments and Fair Value Measurement [Abstract]

Schedule of assets measured at fair value on a recurring basis

The following table identifies the Company’s assets that were measured at fair value on a recurring basis (in thousands):


Description	Balance		Level 1		Level 2		Level 3
June 30, 2012
Money market	$	172,381	$	172,381	$	—	$	—

Total assets at fair value	$	172,381	$	172,381	$	—	$	—

December 31, 2011
Money market	$	136,273	$	136,273	$	—	$	—
U.S. agency obligations		2,012		—		2,012		—

Total assets at fair value	$	138,285	$	136,273	$	2,012	$	—

- 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).

+ References+ Details