Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2013

Fair Value Disclosures [Abstract]

Assets Measured At Fair Value

The following tables present the Company’s assets that are measured at fair value on a recurring basis:

	December 31, 2013
(in thousands)	Quoted Market Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)		Total Fair Value Measurements
Short-term investments:
Mutual funds	$	2,485	$	—		$	—	$	2,485
U.S. government and agency securities	—		2,233			—		2,233
Corporate obligations	—		14,159		*	—		14,159
Other fixed income securities	—		361			—		361
International securities	—		3,048			—		3,048
Municipal obligations			1,477					1,477
Total	$	2,485	$	21,278		$	—	$	23,763

* Included in this amount is a $4.5 million corporate obligation which has been used to collateralize the Company's line of credit with Bank of America, and is included in the line item "Restricted cash and investments," a component of current assets, on the 2013 consolidated balance sheet. See Note 7, Credit Facilities, for furthe