FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 2) (USD $) In Thousands, unless otherwise specified				3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2013 Level 3 Commercial Real Estate Minimum	Mar. 31, 2013 Level 3 Commercial Real Estate Maximum	Mar. 31, 2013 Level 3 Single-Family Residential Minimum	Mar. 31, 2013 Level 3 Single-Family Residential Maximum	Mar. 31, 2013 Level 3 Construction and Development Minimum	Mar. 31, 2013 Level 3 Construction and Development Maximum	Mar. 31, 2013 Level 3 OREO Minimum	Mar. 31, 2013 Level 3 OREO Maximum
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring or non-recurring basis
OREO	$ 9,172	$ 8,195	$ 10,076
Negative adjustment for selling costs and changes in market conditions since appraisal (as a percent)				5.00%	20.00%	5.00%	20.00%	5.00%	20.00%	5.00%	20.00%