Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 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 as of September 30, 2013 and December 31, 2012 (in thousands).

	Fair Value		Level 1		Level 2		Level 3
September 30, 2013
Assets:
Overnight repurchase agreements	$	131,183	$	—	$	131,183	$	—
Certificates of deposit		7,232		—		7,232		—
Total	$	138,415	$	—	$	138,415	$	—
December 31, 2012
Assets:
Overnight repurchase agreements	$	128,269	$	—	$	128,269	$	—
Certificates of deposit		11,849		—		11,849		—
Total	$	140,118	$	—	$	140,118	$	—