Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2013

Fair Value Disclosures [Abstract]

Financial Assets and Liabilities Measured at Fair Value

The following table presents the Company’s financial assets and liabilities which are measured at fair values on a recurring basis and that are subject to the disclosure requirements of the authoritative guidance as of December 31, 2013 and 2012 (in thousands).

	Fair Value		Level 1		Level 2		Level 3
December 31, 2013
Assets:
Repurchase agreements	$	162,126	$	—	$	162,126	$	—
Certificates of deposit		9,038		—		9,038		—
Total cash equivalents	$	171,164	$	—	$	171,164	$	—
Liabilities:
Acquisition related contingent consideration	$	80,476	$	—	$	—	$	80,476
December 31, 2012
Assets:
Repurchase agreements	$	128,269	$	—	$	128,269	$	—
Certificates of deposit		11,849		—		11,849		—
Total cash equivalents	$	140,118	$	—	$	140,118	$	—