INVESTMENT SECURITIES, Amortized Cost, Maturities and Approximate Fair Value (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Amortized Cost [Abstract]
Due in one year or less	$ 11,414
Due from one to five years	144,619
Due from five to ten years	155,633
Due after ten years	5,000
Amortized Cost	316,666	407,211
Fair Value [Abstract]
Due in one year or less	11,653
Due from one to five years	150,576
Due from five to ten years	154,368
Due after ten years	4,977
Total securities available for sale	321,574	400,780
Amortized Cost [Abstract]
Due in one year or less	1,710
Due from one to five years	5,015
Due from five to ten years	32,005
Due after ten years	23,109
Total securities held to maturity	61,839
Total investment securities	378,505
Fair Value [Abstract]
Due in one year or less	1,774
Due from one to five years	5,522
Due from five to ten years	32,091
Due after ten years	23,893
Total securities held to maturity	63,280
Total investment securities	$ 384,854