FAIR VALUE OF FINANCIAL INSTRUMENTS (Unobservable Inputs Reconciliation) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Junior Subordinated Debt [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 92,480	$ 78,001
Liabilities (gains) losses	399	366
Purchases, issuances and settlements, including acquisitions	0	5,959
Sales, maturities and paydowns, net of discount amortization		0
Ending balance	92,879	84,326
TPS and TRUP CDOs [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		19,119
Assets gains (losses), including OTTI		723
Purchases, issuances and settlements, including acquisitions		0
Sales, maturities and paydowns, net of discount amortization		(2,386)
Ending balance		$ 17,456
TPS Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	18,699
Assets gains (losses), including OTTI	119
Purchases, issuances and settlements, including acquisitions	1,725
Ending balance	$ 20,543