Intangible Assets (Details 1) (USD $) In Thousands	9 Months Ended
Sep. 30, 2011
Assets, Total [Member]
Annual amortization of intangible assets and liabilities
2011 (three months remaining)	$ 7,282
2012	21,458
2013	13,303
2014	10,250
2015	7,699
Thereafter	21,570
Total	81,562
Liabilities, Total [Member]
Annual amortization of intangible assets and liabilities
2011 (three months remaining)	1,964
2012	7,009
2013	6,493
2014	4,926
2015	2,751
Thereafter	14,797
Total	$ 37,940

The aggregate estimated amortization expense for succeeding fiscal years for intangible assets subject to amortization.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(3)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275

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- Definition

The amount of amortization expense expected to be recognized for the remainder of the finite-lived intangible asset useful life after the fifth succeeding fiscal year.

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- Definition

The amount of amortization expense expected to be recognized during year five of the five succeeding fiscal years.

+ References

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The amount of amortization expense expected to be recognized during year four of the five succeeding fiscal years.

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The amount of amortization expense expected to be recognized during year one of the five succeeding fiscal years.

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- Definition

The amount of amortization expense expected to be recognized during year three of the five succeeding fiscal years.

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The amount of amortization expense expected to be recognized during year two of the five succeeding fiscal years.

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