FAIR VALUE (Details 4) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2013
Fair value gain loss change in fair value
Aggregate fair value	$ 8,526		$ 8,526		$ 6,388
Gain			3,189	$ 1,894
Interest income	31,424	$ 28,442	91,504	83,296
Mortgage loans held for sale
Fair value gain loss change in fair value
Aggregate fair value	8,526	5,890	8,526	5,890	6,388	$ 10,277	$ 6,809	$ 3,506
Gain	836	728	3,189	1,894
Interest income	67	38	180	133
Change in fair value	10	(65)	107	59
Total included in earnings	77	$ (27)	287	$ 192
Mortgage loans held for sale | Total Fair Value
Fair value gain loss change in fair value
Aggregate fair value	8,526		8,526		6,388
Contractual balance	$ 8,296		8,296		6,265
Gain			$ 230		$ 123