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Goodwill and Intangible Assets Goodwill and Intangible Assets Text (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Goodwill [Line Items] |  |  |
Goodwill Impairment Charge | $ 0 | $ (8,343,000) |
Finite-Lived Intangible Assets, Amortization Expense | 6,000,000 | 3,500,000 | 2,300,000
Deferred Tax Assets, Other |  | 3,200,000 |
Goodwill, Impaired, Accumulated Impairment Loss | $ 8,343,000 | $ 8,343,000 |

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- Definition Deferred Tax Asstes Related To Goodwill Impairment Charge + References No definition available. + Details
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- Definition Aggregate amount of intangible asset amortization recognized as expense during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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)(2) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275 + Details
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- Definition The accumulated impairment losses related to goodwill as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a,h) -URI http://asc.fasb.org/extlink&oid=6905597&loc=d3e13816-109267 + Details
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