DERIVATIVE FINANCIAL INSTRUMENTS (Narrative) (Details) $ in Thousands	Sep. 30, 2015 USD ($) agreement	Dec. 31, 2014 USD ($)
Derivative [Line Items]
Derivative, Notional Amount	$ 141,348	$ 142,933
Total Return Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 88,654	90,184
Number of Interest Rate Derivatives Held | agreement	10
Total Return Swap [Member] | Long [Member]
Derivative [Line Items]
Derivative, Amount of Hedged Item	$ 87,300
Derivative, Fixed Interest Rate	5.70%
Total Return Swap [Member] | Short [Member]
Derivative [Line Items]
Derivative, Basis Spread on Variable Rate	1.70%
Interest rate swap [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 7,694	7,749
Derivative, Fixed Interest Rate	6.50%
Interest rate swap [Member] | SIFMA 7-day Municipal Swap Index [Member]
Derivative [Line Items]
Derivative, Basis Spread on Variable Rate	2.50%
Interest rate swap [Member] | SIFMA 7-day Municipal Swap Index, Pay Rate [Member]
Derivative [Line Items]
Derivative, Variable Interest Rate	2.52%
Interest rate cap [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 45,000	$ 45,000
Derivative, Cap Interest Rate	2.50%