Fair Value Measurements of Assets and Liabilities (Tables)

3 Months Ended

Mar. 29, 2015

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):

March 29, 2015	Level 1		Level 2			Level 3		Total
Available for sale marketable securities:
U.S. Government-backed securities	$	27,615	$	—		$	—	$	27,615
Agency bonds	—		72,126			—		72,126
Commercial paper	—		—			—		—
Certificates of deposit	—		20,976			—		20,976
Municipal bonds	—		16,140			—		16,140
Corporate bonds	—		10,756			—		10,756
Trading securities:
Equity securities – mutual funds	8,280		—			—		8,280
Derivative contracts, net	—		(553		)	—		(553		)
Total	$	35,895	$	119,445		$	—	$	155,340

December 31, 2014	Level 1		Level 2			Level 3		Total
Available for sale marketable securities:
U.S. treasury notes	$	17,608	$	—		$	—	$	17,608
Agency bonds	—		51,951			—		51,951
Commercial paper	—		13,500			—		13,500
Certificates of deposit	—		19,122			—		19,122
Municipal bonds	—		27,119			—		27,119
Corporate bonds	—		10,902			—		10,902
Trading securities:
Equity securities – mutual funds	7,351		—			—		7,351
Derivative contracts, net	—		(2,739		)	—		(2,739		)
Total	$	24,959	$	119,855		$	—	$	144,814