Fair Value Measurements (Tables)

6 Months Ended

Jul. 02, 2011

Fair Value Measurements

Schedule of financial assets and liabilities measured at fair value

	Estimated Fair Value July 2, 2011
	Total		Input Levels Used
	Fair Value		Level 1		Level 2		Level 3
Cash and cash equivalents	$	41,282	$	41,282	$	—	$	—
ARS	8,130		—		—		8,130
Available-for-sale securities excluding ARS	62,953		—		62,953		—
Foreign currency forward contracts	368		368		—		—
Commodity futures contracts	573		573		—		—
Commodity options contracts	565		565		—		—
Trading securities	43,076		43,076		—		—
Total assets measured at fair value	$	156,947	$	85,864	$	62,953	$	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	$	163,101	$	27,178	$	6,775

	Estimated Fair Value July 3, 2010
	Total			Input Levels Used
	Fair Value			Level 1			Level 2		Level 3
Cash and cash equivalents	$	60,006		$	60,006		$	—	$	—
ARS	8,279			—			—		8,279
Available-for-sale securities excluding ARS	27,102			—			27,102		—
Foreign currency forward contracts	1,371			1,371			—		—
Commodity futures contracts	(823		)	(823		)	—		—
Commodity options contracts	(1,339		)	(1,339		)	—		—
Trading securities	33,422			33,422			—		—
Total assets measured at fair value	$	128,018		$	92,637		$	27,102	$	8,279

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 in other comprehensive loss	1,355		569
Balance at July 2 and July 3, respectively	$	8,130	$	8,279