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Business Segment Reporting - Narrative (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2011
Segment Reporting [Abstract] |
Other Nonrecurring Expense | $ 50,340

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- Definition Amount of other expense that is infrequent in occurrence or unusual in nature. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6365513&loc=d3e15122-107781 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration