Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2013

Fair Value Measurements

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

The fair value of these certain financial assets was determined using the following inputs as of September 30, 2013 and December 31, 2012 (in thousands):

	Fair Value
	as of
	September 30, 2013		Level 1		Level 2		Level 3
Financial Assets:
Money market funds (1)	$	10,000	$	10,000	$	—	$	—
Financial Liabilities:
Debt (5)	$	350,000	$	—	$	350,000	$	—

	Fair Value
	as of
	December 31, 2012		Level 1		Level 2		Level 3
Financial Assets:
Money market funds (1)	$	47,086	$	47,086	$	—	$	—
U.S. government debt securities (3)	$	59,815	$	55,817	$	3,998	$	—
Corporate debt securities (3)	$	110,508	$	—	$	110,508	$	—
Foreign government debt securities (2)	$	2,421	$	—	$	2,421	$	—
Financial Liabilities:
Debt (5)	$	95,000	$	—	$	95,000	$	—

(1) Included in cash and cash equivalents in the Company’s condensed consoldiated balance sheet.

(2) Included in short-term marketable securities in the Company’s condensed consolidated balance sheet.

(3) Included in short-term and long-term marketable securities in the Company’s condensed consolidated balance sheet.

(4) Included in cash and cash equivalents, short-term and long-term marketable securities in the Company’s condensed consolidated balance sheet.

(5) Included in current portion of long-term debt and long-term debt in the Company’s condensed consolidated balance sheet.