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Summary of Significant Accounting Policies (Summary of Revenue Concentration) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Summary of Significant Accounting Policies [Abstract] |  |  |
CDO asset management revenue and related service | $ 8,678 | $ 10,999 | $ 13,664
Total asset management revenue | 9,682 | 14,496 | 19,239
Revenues | $ 46,156 | $ 55,750 | $ 57,517
CDO asset management % as compared to total asset management fees | 90.00% | 76.00% | 71.00%
CDO asset management % as compared to total revenues | 19.00% | 20.00% | 24.00%
Principal transactions and other income | $ 78 | $ 7,979 | $ (6,668)
Principal transactions % as compared to total revenues | 0.00% | 14.00% | (12.00%)

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- Definition Collateralized Debt Obligation Asset Management Percentage Compare to Total Revenues + References No definition available. + Details
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- Definition Principal transactions include all gains, losses, and income (interest and dividend) from securities or loans classified as other investments, at fair value (including gains and losses on derivatives classified as other investments, at fair value) in the consolidated balance sheets. Other income includes foreign currency gains and losses, interest earned on cash and cash equivalents, and other miscellaneous income. + References No definition available. + Details
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- Definition Amount of fixed fee revenue for the management of an investment fund portfolio. Excludes investment advisory, distribution and servicing, and performance fees. + References No definition available. + Details
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + 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 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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