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The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

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Fair values as of the balance sheet date of all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

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The number of derivative instruments of a particular group held by the entity.

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The per share price of the Company's stock at which the contract holder of the freestanding contract has the right to purchase or sell the Company's stock at a future date.

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Aggregate notional amount of all derivatives. The notional amount relates to a number of currency units, shares, bushels, pounds, or other units specified in a derivative instrument.

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Derivatives and Hedging Activities (Details) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended				9 Months Ended				12 Months Ended				9 Months Ended
	Sep. 30, 2011	Sep. 30, 2011 Secured Term Loan 2 [Member]	Sep. 30, 2011 Secured Term Loan 1 [Member]	Sep. 30, 2011 Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] Interest Rate Swap [Member]	Sep. 30, 2011 Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] Interest Rate Swap [Member] Interest Expense [Member]	Sep. 30, 2010 Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] Interest Rate Swap [Member] Interest Expense [Member]	Sep. 30, 2011 Designated as Hedging Instrument [Member] Interest Rate Swap [Member] Accounts Payable And Other Liabilities [Member]	Dec. 31, 2010 Designated as Hedging Instrument [Member] Interest Rate Swap [Member] Accounts Payable And Other Liabilities [Member]	Dec. 31, 2008 Not Designated as Hedging Instrument [Member] Forward Contracts [Member]	Sep. 30, 2011 Not Designated as Hedging Instrument [Member] Forward Contracts [Member]	Sep. 30, 2011 Not Designated as Hedging Instrument [Member] Forward Contracts [Member] Other Assets [Member]	Dec. 31, 2010 Not Designated as Hedging Instrument [Member] Forward Contracts [Member] Other Assets [Member]	Sep. 30, 2011 Not Designated as Hedging Instrument [Member] Forward Contracts [Member] Change in value of forward equity commitment [Member]	Sep. 30, 2010 Not Designated as Hedging Instrument [Member] Forward Contracts [Member] Change in value of forward equity commitment [Member]	Sep. 30, 2011 Interest Rate Swap [Member]	Sep. 30, 2011 Forward Contracts [Member]
Derivative [Line Items]
Debt Instrument, Face Amount		$ 35,551	$ 25,000
Expected Amount Of Derivative Related Interest To Be Reclassified To Interest Expense Over The Next 12 Months	1,729
Forward Contract Indexed to Issuer's Equity, Shares									3,500,000
Accelerated Share Repurchases, Final Price Paid Per Share									$ 5.60
Prepayment of Derivative Instrument										15,576
Interest Rate Swap Floating Payment Rate Per Annum	2.50%
Derivative, Number of Instruments Held				1						1
Notional Amount of Derivatives				60,551						25,994
Derivative Liabilities							(3,938)	(5,280)
Derivative Assets											21,970	27,574
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net					(814)	(3,020)
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net					2,156	2,153
Derivative Instruments, Gain (Loss) Recognized in Income, Net													(4,318)	5,400
Termination Value															4,124
Cash Settlement Value Net																$ 4,024
Forward Contract Indexed To Issuers Equity Share Settlement Shares Retired										3,974,645