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Related Party Transactions (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended				3 Months Ended														3 Months Ended							3 Months Ended	9 Months Ended		3 Months Ended			9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2013 EBC Family Trust [Member]	Sep. 30, 2013 Star Asia Manager [Member]	Dec. 31, 2012 Star Asia Manager [Member]	Sep. 30, 2013 Star Asia [Member]	Dec. 31, 2012 Star Asia [Member]	Sep. 30, 2013 EuroDekania Limited [Member]	Dec. 31, 2012 EuroDekania Limited [Member]	Sep. 30, 2013 Deep Value GP [Member]	Sep. 30, 2013 Deep Value GP II [Member]	Dec. 31, 2012 Star Asia SPV [Member]	Sep. 30, 2013 Star Asia Opportunity [Member]	Dec. 31, 2012 Star Asia Opportunity [Member]	Sep. 30, 2013 Star Asia Capital Management [Member]	Dec. 31, 2012 Star Asia Capital Management [Member]	Mar. 31, 2013 Star Asia Special Situations Fund [Member]	Sep. 30, 2013 Star Asia Special Situations Fund [Member]	Dec. 31, 2012 Star Asia Special Situations Fund [Member]	Sep. 30, 2013 S.A.A. Manager [Member]	Dec. 31, 2012 S.A.A. Manager [Member]	Sep. 30, 2013 SAP GP [Member]	Dec. 31, 2012 SAP GP [Member]	Sep. 30, 2013 TBBK [Member]	Sep. 30, 2013 TBBK [Member]	Dec. 31, 2012 TBBK [Member]	Sep. 30, 2013 Mead Park Capital [Member]	Sep. 30, 2012 Resource Securities, Inc. [Member]	Sep. 30, 2012 Subordinated Debt [Member]	Sep. 30, 2013 Subordinated Debt [Member]
Related Party Transaction [Line Items]
Ownership percentage of equity method affiliate						100.00%	50.00%	28.00%	28.00%	10.00%	10.00%	50.00%	40.00%	31.00%	28.00%	28.00%	33.00%	33.00%		2.00%	6.00%	33.00%	33.00%	33.00%	33.00%
Securities sold under agreements to repurchase	$ 94,856		$ 70,273																							$ 40,824	$ 40,824
Investments / advances	10																		302
Interest Expense, Related Party																										157	250
Cash and cash equivalents	22,313	12,876	14,500	18,221																						80	80	36
Related Party Transaction, Expenses from Transactions with Related Party																														6
Related Party Transaction, Amounts of Transaction					4,000																								9,746
Financial Instruments Sold Not Yet Purchased, Principal Amount																										406	406
Trading securities sold, not yet purchased	53,332		44,167																							437	437
Repayments of Debt	$ 907	$ 11,446																													$ 1,177	$ 352

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