Goodwill and Other Intangible Assets (Intangible assets amortization schedule) (Details) (USD $) In Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Goodwill and Other Intangible Assets
Amortization expense	$ 1,645	$ 1,561	$ 4,942	$ 4,898
Amortization expense - forecast for 2011			6,600
Amortization expense - forecast for 2012			6,100
Amortization expense - forecast for 2013			5,700
Amortization expense - forecast for 2014			5,700
Amortization expense - forecast for 2015			$ 5,700

Aggregate amount of intangible asset amortization recognized as expense during the period.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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

+ References

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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

+ References

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

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-Name Statement of Financial Accounting Standard (FAS)

-Number 142

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

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

+ References

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-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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

+ References

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-Name Statement of Financial Accounting Standard (FAS)

-Number 142

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-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.

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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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-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.

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