DEPOSITS AND RETAIL REPURCHASE AGREEMENTS DEPOSITS AND RETAIL REPURCHASE AGREEMENTS (Maturities of Certificates of Deposit) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Maturities of Time Deposits [Abstract]
Certificates which mature or reprice within one year or less	$ 556,134
Certificates which mature or reprice after one year through two years	94,104
Certificates which mature or reprice after two years through three years	38,416
Certificates which mature or reprice after three years through four years	17,295
Certificates which mature or reprice after four years through five years	21,386
Certificates which mature or reprice after five years	3,326
Total certificate accounts	$ 730,661	$ 770,516