Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2016

Investments carried at fair value are categorized into one of the three categories described above and consisted of the following (in thousands):


	September 30, 2016								December 31, 2015
	Fair Value		Level 1		Level 2		Level 3		Fair Value		Level 1		Level 2		Level 3
Assets held in rabbi trust	$	7,309	$	—	$	7,309	$	—	$	5,661	$	—	$	5,661	$	—

Money market funds ⁽¹⁾	$	60,513	$	60,513	$	—	$	—	$	5,987	$	5,987	$	—	$	—

Marketable securities, available-for-sale:
Short-term investments:
U.S. Treasuries	$	24,878	$	24,878	$	—	$	—	$	62,272	$	62,272	$	—	$	—
U.S. Government Sponsored Entities		11,513		—		11,513		—		17,559		—		17,559		—
Corporate debt securities		11,986		—		11,986		—		—		—		—		—
Asset-backed securities and other		—		—		—		—		29		—		29		—

	$	48,377	$	24,878	$	23,499	$	—	$	79,860	$	62,272	$	17,588	$	—
Long-term investments:
U.S. Treasuries	$	50,698	$	50,698	$	—	$	—	$	15,171	$	15,171	$	—	$	—
U.S. Government Sponsored Entities		16,014		—		16,014		—		12,022		—		12,022		—
Corporate debt securities		18,769		—		18,769		—		16,705		—		16,705		—
Asset-backed securities and other		8,798		—		8,798		—		10,497		—		10,497		—

	$	94,279	$	50,698	$	43,581	$	—	$	54,395	$	15,171	$	39,224	$	—

⁽¹⁾	Included in cash and cash equivalents.