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Due from / Due to Related Parties - Schedule of Due from / Due to Related Parties (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Due From Due To Related Parties [Line Items] |  |
Due from Related Parties | $ 452 | $ 679
Deep Value GP [Member] |  |
Due From Due To Related Parties [Line Items] |  |
Due from Related Parties |  | 29
Deep Value GP II [Member] |  |
Due From Due To Related Parties [Line Items] |  |
Due from Related Parties |  | 61
Star Asia Manager [Member] |  |
Due From Due To Related Parties [Line Items] |  |
Due from Related Parties | 98 | 50
Cohen Brothers Financial, LLC [Member] |  |
Due From Due To Related Parties [Line Items] |  |
Due from Related Parties | 90 | 306
Employees and Other [Member] |  |
Due From Due To Related Parties [Line Items] |  |
Due from Related Parties | $ 264 | $ 233

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