INVESTMENT SECURITIES (Details 5) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Amortized cost	$ 694,595
Fair value	708,884	729,844
Us Treasury Securities [Member]
Amortized,one year or less	0
Amortized,after one year through five years	200
Amortized, after five through ten years	0
Amortized,due after ten years	0
Amortized cost	200
Fair value,one year or less	0
Fair value,after one year through five years	200
Fair value,after five through ten years	0
Fair value,due after ten years	0
Fair value	200	203
Us Government Agencies Debt Securities [Member]
Amortized,one year or less	500
Amortized,after one year through five years	150,604
Amortized, after five through ten years	49,648
Amortized,due after ten years	0
Amortized cost	200,752
Fair value,one year or less	501
Fair value,after one year through five years	154,174
Fair value,after five through ten years	50,013
Fair value,due after ten years	0
Fair value	204,688
Corporate Debt Securities [Member]
Amortized,one year or less	0
Amortized,after one year through five years	500
Amortized, after five through ten years	0
Amortized,due after ten years	13,803
Amortized cost	14,303
Fair value,one year or less	0
Fair value,after one year through five years	500
Fair value,after five through ten years	0
Fair value,due after ten years	7,878
Fair value	8,378	8,507
Us States and Political Subdivisions Debt Securities [Member]
Amortized,one year or less	2,158
Amortized,after one year through five years	17,193
Amortized, after five through ten years	31,681
Amortized,due after ten years	18,014
Amortized cost	69,046
Fair value,one year or less	2,215
Fair value,after one year through five years	18,210
Fair value,after five through ten years	34,421
Fair value,due after ten years	18,784
Fair value	73,630	60,732
Collateralized Mortgage Backed Securities [Member]
Amortized cost	399,028
Fair value	410,083	428,725
Equity Securities, Other [Member]
Amortized cost	11,266
Fair value	$ 11,905	$ 12,046