INVESTMENT SECURITIES, Amortized Cost, Maturities and Approximate Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Amortized Cost [Abstract]
Due in one year or less	$ 30,745
Due from one to five years	142,658
Due from five to ten years	96,950
Amortized Cost	270,353	$ 294,310
Fair Value [Abstract]
Due in one year or less	31,271
Due from one to five years	146,416
Due from five to ten years	96,150
Total securities available for sale	273,837	298,670
Amortized Cost [Abstract]
Due in one year or less	837
Due from one to five years	4,593
Due from five to ten years	32,097
Due after ten years	26,091
Amortized Cost	63,618	62,270
Total investment securities, Amortized Cost	333,971	356,580
Fair Value [Abstract]
Due in one year or less	866
Due from one to five years	4,910
Due from five to ten years	32,711
Due after ten years	27,364
Total securities held to maturity	65,851	64,796
Total investment securities, Fair Value	$ 339,688	$ 363,466