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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2012

Fair Value Measurements

Schedule of financial assets and liabilities measured at fair value

		Estimated Fair Value June 30, 2012
		Total			Input Levels Used
		Fair Value			Level 1			Level 2			Level 3
Cash and cash equivalents		$	66,617		$	66,617		$	—		$	—
Auction rate security		7,453			—			—			7,453
Available-for-sale securities excluding the auction rate security		74,016			—			74,016			—
Foreign currency forward contracts		70			—			70			—
Commodity futures contracts		(132		)	(132		)	—			—
Commodity options contracts		(18		)	(18		)	—			—
Trading securities		46,240			46,240			—			—
Total assets measured at fair value		$	194,246		$	112,707		$	74,086		$	7,453

Estimated Fair Value December 31, 2011

Total

Input Levels Used

Fair Value

Level 1

Level 2

Level 3

Cash and cash equivalents

$

78,612

$

78,612

$

—

$

—

Auction rate security

7,453

—

—

7,453

Available-for-sale securities excluding the auction rate security

57,835

—

57,835

—

Foreign currency forward contracts

205

—

205

—

Commodity futures contracts

203

203

—

—

Commodity options contracts

—

—

—

—

Trading securities

41,768

41,768

—

—

Total assets measured at fair value

$

186,076

$

120,583

$

58,040

$

7,453

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

$

—

$

—

Auction rate security

8,130

—

—

8,130

Available-for-sale securities excluding the auction rate security

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

$

85,496

$

63,321

$

8,130

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

		2012			2011

Balance at January 1		$	7,453		$	6,775
Unrealized gain in other comprehensive earnings		—			1,355

Balance at June 30 and July 2, respectively		$	7,453		$	8,130

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income, and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

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