Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2013

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

As of March 31, 2013 and 2012, the impact of the Company's derivative instruments and their location within the Consolidated Statements of Income and Comprehensive Income was as follows:

		March 31, 2013				March 31, 2012
	Location of Gain Recognized in Income	Carrying Amount		Fair Value (Level 1)		Carrying Amount	Fair Value (Level 1)
Foreign Currency Forward Contracts (a)	Other Operating Income, net	$	1,881	$	1,881	—	—

(a) Foreign currency forward contracts are recorded in "Other Current Assets."

Fair Value, by Balance Sheet Grouping [Table Text Block]

The following table presents the carrying amount, estimated fair values and categorization under the fair value hierarchy of financial instruments held by the Company at March 31, 2013 and December 31, 2012, using market information and what management believes to be appropriate valuation methodologies under generally accepted accounting principles:

	March 31, 2013								December 31, 2012
Asset (liability)	Carrying Amount			Fair Value					Carrying Amount			Fair Value
				Level 1		Level 2						Level 1		Level 2
Cash and cash equivalents	$	266,017		$	266,017	$	—		$	280,596		$	280,596	$	—
Restricted cash (a)	651			651		—			10,559			10,559		—
Current maturities of long-term debt	(50,000		)	—		(50,000		)	(150,000		)	—		(150,000		)
Long-term debt	(1,150,471		)	—		(1,307,144		)	(1,120,052		)	—		(1,250,341		)

(a) Restricted cash is recorded in "Other Assets" and represents the proceeds from LKE sales deposited with a third-party intermediary.

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

Assets measured at fair value on a recurring basis are summarized below:

Asset	Carrying Value at March 31, 2013		Level 2		Carrying Value at December 31, 2012		Level 2
Investment in special-purpose entity	$	2,666	$	2,666	$	2,671	$	2,671