FAIR VALUE OF FINANCIAL INSTRUMENTS (Unobservable Inputs Reconciliation) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Junior Subordinated Debt [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 113,917	$ 112,516	$ 114,091	$ 98,707
Liabilities (gains) losses	(296)	258	(470)	14,067
Ending balance	113,621	112,774	113,621	112,774
TPS Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	25,838	25,474
Assets gains (losses), including OTTI	(97)	66
Ending balance	25,741	25,540	25,741	25,540
TPS and TRUP CDOs [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance			25,896	22,058
Assets gains (losses), including OTTI			(155)	3,482
Ending balance	$ 25,741	$ 25,540	$ 25,741	$ 25,540