DEPOSITS AND RETAIL REPURCHASE AGREEMENTS DEPOSITS AND RETAIL REPURCHASE AGREEMENTS (Maturities of Certificates of Deposit) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Maturities of Time Deposits [Abstract]
Certificates which mature or reprice within one year or less	$ 575,372	$ 564,501
Certificates which mature or reprice after one year through two years	103,562	117,724
Certificates which mature or reprice after two years through three years	44,112	46,378
Certificates which mature or reprice after three years through four years	17,177	20,016
Certificates which mature or reprice after four years through five years	21,414	17,338
Certificates which mature or reprice after five years	4,143	4,559
Total certificate accounts	$ 765,780	$ 770,516