Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2015

Fair Value of Financial Instruments [Abstract]

Summary of Fair Value Measurement Financial Asset and Liabilities

Financial assets and liabilities subject to fair value measurements were as follows (in thousands):

	Fair Value Measurements at March 31, 2015
				Quoted Prices in Active Markets for Identical Assets			Significant Other Observable Inputs			Significant Unobservable Inputs
	Total			Level 1			Level 2			Level 3
Assets:
Cash and cash equivalents		$	237,088		$	237,088		$	—		$	—
Money market funds			26,046			26,046			—			—
Restricted cash			300			300			—			—
Total Assets		$	263,434		$	263,434		$	—		$	—

	Fair Value Measurements at December 31, 2014
				Quoted Prices in Active Markets for Identical Assets			Significant Other Observable Inputs			Significant Unobservable Inputs
	Total			Level 1			Level 2			Level 3
Assets:
Cash and cash equivalents		$	131,545		$	131,545		$	—		$	—
Money market funds			26,046			26,046			—			—
Restricted cash			300			300			—			—
Total Assets		$	157,891		$	157,891		$	—		$	—

- 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.

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