Fair Value Measurements of Assets and Liabilities (Tables)

12 Months Ended

Dec. 31, 2013

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

Following are the disclosures related to the fair value of our financial assets and (liabilities) (in thousands):

December 31, 2013	Level 1		Level 2			Level 3		Total
Available for sale marketable securities:
U.S. treasury notes	$	10,128	$	—		$	—	$	10,128
Agency bonds	—		37,961			—		37,961
Commercial paper	—		39,987			—		39,987
Certificates of deposit	—		7,786			—		7,786
Municipal bonds	—		49,319			—		49,319
Corporate bond	—		5,001			—		5,001
Trading securities:
Equity securities – mutual funds	5,287		—			—		5,287
Derivative contracts, net	—		(1,113		)	—		(1,113		)
Total	$	15,415	$	138,941		$	—	$	154,356

December 31, 2012	Level 1		Level 2		Level 3		Total
Available for sale marketable securities:
U.S. treasury notes	$	60,786	$	—	$	—	$	60,786
Agency bonds	—		31,157		—		31,157
Commercial paper	—		5,000		—		5,000
Certificates of deposit	—		5,494		—		5,494
Municipal bonds	—		3,228		—		3,228
Trading securities:
Equity securities – mutual funds	3,046		—		—		3,046
Derivative contracts, net	—		1,655		—		1,655
Total	$	63,832	$	46,534	$	—	$	110,366