PREMISES AND EQUIPMENT (Details) (USD $) In Thousands, unless otherwise specified							12 Months Ended				12 Months Ended				12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Land [Member]	Dec. 31, 2011 Land [Member]	Dec. 31, 2012 Buildings and Improvements [Member]	Dec. 31, 2011 Buildings and Improvements [Member]	Dec. 31, 2012 Buildings and Improvements [Member] Minimum [Member]	Dec. 31, 2012 Buildings and Improvements [Member] Maximum [Member]	Dec. 31, 2012 Leasehold Improvements [Member]	Dec. 31, 2011 Leasehold Improvements [Member]	Dec. 31, 2012 Leasehold Improvements [Member] Minimum [Member]	Dec. 31, 2012 Leasehold Improvements [Member] Maximum [Member]	Dec. 31, 2012 Equipment, Furniture and Fixtures [Member]	Dec. 31, 2011 Equipment, Furniture and Fixtures [Member]	Dec. 31, 2012 Equipment, Furniture and Fixtures [Member] Minimum [Member]	Dec. 31, 2012 Equipment, Furniture and Fixtures [Member] Maximum [Member]	Dec. 31, 2012 Construction in Progress [Member]	Dec. 31, 2011 Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)							10 years	40 years			10 years	39 years			3 years	12 years
Subtotal	$ 691,980	$ 677,184	$ 76,611	$ 73,978	$ 317,824	$ 305,814			$ 9,759	$ 9,626			$ 280,423	$ 273,449			$ 7,363	$ 14,317
Accumulated depreciation and amortization	372,524	353,801
Premises and equipment, net	$ 319,456	$ 323,383