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Certain Relationships And Related Party Transactions (Narrative) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
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Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2012 | Jun. 30, 2011
Certain Relationships And Related Party Transactions [Abstract] |  |  |  |
Management fee, rate per year | $ 15.0 |  |  |
Management fees | $ 4.0 | $ 4.2 | $ 8.0 | $ 8.0

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- Definition Management Fee Rate Per Year, Amount + References No definition available. + Details
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- Details
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- Definition Fees paid to advisors who provide certain management support and administrative oversight services including the organization and sale of stock, investment funds, limited partnerships and mutual funds. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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