VARIABLE INTEREST ENTITIES INTANGIBLE ASSETS (Schedule of Servicing Rights) (Details) RSO (RSO [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Balance, beginning of period	$ 21,813
Amortization	(507)	(444)
Balance, end of period	21,813
Balance, end of period	9,229		9,736
Servicing Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Balance, beginning of period	894,767	433,153	433,153
Additions	212,390		519,915
Payoffs, sales and curtailments	53,151		(58,301)
Balance, end of period	1,160,308		894,767
Servicing Contracts [Member] | Other Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Balance, beginning of period	9,374	4,885	4,885
Amortization	(825)		(1,957)
Additions	2,936		6,446
Sales	0		0
Balance, end of period	11,485		9,374
Temporary fair value adjustment	(1,050)		0
Balance, end of period	$ 10,435		$ 9,374