INVESTMENT SECURITIES (Narrative) (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016 USD ($) Facility shares	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) Facility Issuer shares	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($) Issuer
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Reinvestment Price			99.5		99.0
Fair Value, Post Reinvestment Price			99.75		99.0
Discount rates			17.00%
Impairment			$ 901		$ 331
Purchase of investment			9,057	$ 1,945
Unrealized (gain) loss on trading securities			261	1,333
Trading securities	$ 1,590		1,590		$ 1,451
RAI
Schedule of Available-for-sale Securities [Line Items]
(Gain) loss on trading securities	175	$ 22	197	28
Unrealized (gain) loss on trading securities	$ (13)	22	$ 9	42
CLO securities
Schedule of Available-for-sale Securities [Line Items]
Number of CDO issuers that represent the retained equity interest | Issuer			14		15
Discount rates			17.00%
Equity securities | RSO
Schedule of Available-for-sale Securities [Line Items]
Number of shares held (in shares) | shares	715,396		715,396
Equity securities | TBBK
Schedule of Available-for-sale Securities [Line Items]
Number of shares held (in shares) | shares	18,972		18,972
Number of secured corporate credit facilities | Facility	1		1
Equity securities | RREDX
Schedule of Available-for-sale Securities [Line Items]
Number of shares held (in shares) | shares	10,808		10,808
Purchase of investment			$ 108
Equity securities | Resource Credit Income Fund
Schedule of Available-for-sale Securities [Line Items]
Purchase of investment			1,700
Pelium
Schedule of Available-for-sale Securities [Line Items]
(Gain) loss on trading securities	$ 412	201	7	884
Unrealized (gain) loss on trading securities	578	$ 507	252	$ 1,300
Trading securities	$ 24,552		$ 24,552		$ 26,516