Fair Value Measurements (Tables)

9 Months Ended

Oct. 01, 2011

Fair Value Measurements

Schedule of financial assets and liabilities measured at fair value

	Estimated Fair Value October 1, 2011
	Total			Input Levels Used
	Fair Value			Level 1		Level 2			Level 3
Cash and cash equivalents	$	25,690		$	25,690	$	—		$	—
ARS	8,130			—		—			8,130
Available-for-sale securities excluding ARS	60,802			—		60,802			—
Foreign currency forward contracts	(108		)	—		(108		)	—
Commodity futures contracts	345			345		—			—
Commodity options contracts	—			—		—			—
Trading securities	39,031			39,031		—			—
Total assets measured at fair value	$	133,890		$	65,066	$	60,694		$	8,130

	Estimated Fair Value December 31, 2010
	Total		Input Levels Used
	Fair Value		Level 1		Level 2		Level 3
Cash and cash equivalents	$	115,976	$	115,976	$	—	$	—
ARS	6,775		—		—		6,775
Available-for-sale securities excluding ARS	27,178		—		27,178		—
Foreign currency forward contracts	942		—		942		—
Commodity futures contracts	2,310		2,310		—		—
Commodity options contracts	5,369		5,369		—		—
Trading securities	38,504		38,504		—		—
Total assets measured at fair value	$	197,054	$	162,159	$	28,120	$	6,775
	Estimated Fair Value October 2, 2010
	Total		Input Levels Used
	Fair Value		Level 1		Level 2		Level 3
Cash and cash equivalents	$	58,862	$	58,862	$	—	$	—
ARS	5,960		—		—		5,960
Available-for-sale securities excluding ARS	27,203		—		27,203		—
Foreign currency forward contracts	820		—		820		—
Commodity futures contracts	647		647		—		—
Commodity options contracts	1,486		1,486		—		—
Trading securities	36,158		36,158		—		—
Total assets measured at fair value	$	131,136	$	97,153	$	28,023	$	5,960

Schedule of financial instruments measured at fair value on a recurring basis using significant unobservable inputs (Level 3)

	2011		2010
Balance at January 1	$	6,775	$	7,710
Unrealized gain (loss) in other comprehensive loss	1,355		(1,750		)
Balance at October 1 and October 2, respectively	$	8,130	$	5,960