VARIABLE INTEREST ENTITIES (Variable Interest Entities, Consolidated) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Variable Interest Entity [Line Items]
Cash	$ 18,348	$ 24,132	$ 27,521	$ 33,947
Receivables	3,082	3,228
Investment securities, at fair value	44,758	45,672
Other assets	13,781	9,733
Total assets	204,586	211,195
Accrued expenses and other liabilities	22,502	27,184
Pelium
Variable Interest Entity [Line Items]
Cash	570	377
Receivables	2,377	2,345
Investment securities, at fair value	25,610	24,712
Other assets	93	98
Total assets	28,650	27,532
Accrued expenses and other liabilities	$ 766	$ 99