LOANS AND ALLOWANCE (Details 6) (USD $)												6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 Pass	Dec. 31, 2011 Pass	Jun. 30, 2012 Special Mention	Dec. 31, 2011 Special Mention	Jun. 30, 2012 Substandard	Dec. 31, 2011 Substandard	Jun. 30, 2012 Non-accrual	Dec. 31, 2011 Non-accrual	Jun. 30, 2012 Minimum	Jun. 30, 2012 Minimum Substandard	Jun. 30, 2012 Minimum Non-accrual	Jun. 30, 2012 Minimum Watch	Jun. 30, 2012 Minimum Loss	Jun. 30, 2012 Maximum Watch	Jun. 30, 2012 Consumer loans not secured by 1-4 family residential real estate Minimum Substandard	Jun. 30, 2012 Consumer loans not secured by 1-4 family residential real estate Maximum Substandard	Jun. 30, 2012 Commercial	Dec. 31, 2011 Commercial	Jun. 30, 2012 Commercial Commercial and industrial	Dec. 31, 2011 Commercial Commercial and industrial	Jun. 30, 2012 Commercial Commercial and industrial Pass	Dec. 31, 2011 Commercial Commercial and industrial Pass	Jun. 30, 2012 Commercial Commercial and industrial Special Mention	Dec. 31, 2011 Commercial Commercial and industrial Special Mention	Jun. 30, 2012 Commercial Commercial and industrial Substandard	Dec. 31, 2011 Commercial Commercial and industrial Substandard	Jun. 30, 2012 Commercial Commercial and industrial Non-accrual	Dec. 31, 2011 Commercial Commercial and industrial Non-accrual	Jun. 30, 2012 Commercial Agricultural	Dec. 31, 2011 Commercial Agricultural	Jun. 30, 2012 Commercial Agricultural Pass	Dec. 31, 2011 Commercial Agricultural Pass	Dec. 31, 2011 Commercial Agricultural Special Mention	Jun. 30, 2012 Commercial Agricultural Substandard	Dec. 31, 2011 Commercial Agricultural Substandard	Jun. 30, 2012 Commercial Agricultural Non-accrual	Dec. 31, 2011 Commercial Agricultural Non-accrual	Jun. 30, 2012 Commercial Real Estate	Dec. 31, 2011 Commercial Real Estate	Jun. 30, 2012 Commercial Real Estate Farm	Dec. 31, 2011 Commercial Real Estate Farm	Jun. 30, 2012 Commercial Real Estate Farm Pass	Dec. 31, 2011 Commercial Real Estate Farm Pass	Jun. 30, 2012 Commercial Real Estate Farm Special Mention	Dec. 31, 2011 Commercial Real Estate Farm Special Mention	Jun. 30, 2012 Commercial Real Estate Farm Substandard	Dec. 31, 2011 Commercial Real Estate Farm Substandard	Jun. 30, 2012 Commercial Real Estate Farm Non-accrual	Dec. 31, 2011 Commercial Real Estate Farm Non-accrual	Jun. 30, 2012 Commercial Real Estate Hotel	Dec. 31, 2011 Commercial Real Estate Hotel	Jun. 30, 2012 Commercial Real Estate Hotel Pass	Dec. 31, 2011 Commercial Real Estate Hotel Pass	Jun. 30, 2012 Commercial Real Estate Hotel Special Mention	Dec. 31, 2011 Commercial Real Estate Hotel Special Mention	Jun. 30, 2012 Commercial Real Estate Hotel Substandard	Dec. 31, 2011 Commercial Real Estate Hotel Substandard	Dec. 31, 2011 Commercial Real Estate Hotel Non-accrual	Jun. 30, 2012 Commercial Real Estate Construction and development	Dec. 31, 2011 Commercial Real Estate Construction and development	Jun. 30, 2012 Commercial Real Estate Construction and development Pass	Dec. 31, 2011 Commercial Real Estate Construction and development Pass	Jun. 30, 2012 Commercial Real Estate Construction and development Special Mention	Dec. 31, 2011 Commercial Real Estate Construction and development Special Mention	Jun. 30, 2012 Commercial Real Estate Construction and development Substandard	Dec. 31, 2011 Commercial Real Estate Construction and development Substandard	Jun. 30, 2012 Commercial Real Estate Construction and development Non-accrual	Dec. 31, 2011 Commercial Real Estate Construction and development Non-accrual	Jun. 30, 2012 Commercial Real Estate Other	Dec. 31, 2011 Commercial Real Estate Other	Jun. 30, 2012 Commercial Real Estate Other Pass	Dec. 31, 2011 Commercial Real Estate Other Pass	Jun. 30, 2012 Commercial Real Estate Other Special Mention	Dec. 31, 2011 Commercial Real Estate Other Special Mention	Jun. 30, 2012 Commercial Real Estate Other Substandard	Dec. 31, 2011 Commercial Real Estate Other Substandard	Jun. 30, 2012 Commercial Real Estate Other Non-accrual	Dec. 31, 2011 Commercial Real Estate Other Non-accrual	Jun. 30, 2012 Residential	Dec. 31, 2011 Residential	Jun. 30, 2012 Residential Substandard	Dec. 31, 2011 Residential Substandard	Jun. 30, 2012 Residential Performing	Dec. 31, 2011 Residential Performing	Jun. 30, 2012 Residential Watch	Dec. 31, 2011 Residential Watch	Jun. 30, 2012 Residential 1-4 Family	Dec. 31, 2011 Residential 1-4 Family	Jun. 30, 2012 Residential 1-4 Family Substandard	Dec. 31, 2011 Residential 1-4 Family Substandard	Jun. 30, 2012 Residential 1-4 Family Performing	Dec. 31, 2011 Residential 1-4 Family Performing	Jun. 30, 2012 Residential 1-4 Family Watch	Dec. 31, 2011 Residential 1-4 Family Watch	Jun. 30, 2012 Residential Home equity	Dec. 31, 2011 Residential Home equity	Jun. 30, 2012 Residential Home equity Substandard	Dec. 31, 2011 Residential Home equity Substandard	Jun. 30, 2012 Residential Home equity Performing	Dec. 31, 2011 Residential Home equity Performing	Jun. 30, 2012 Residential Home equity Watch	Dec. 31, 2011 Residential Home equity Watch	Jun. 30, 2012 Consumer	Dec. 31, 2011 Consumer	Jun. 30, 2012 Consumer Substandard	Dec. 31, 2011 Consumer Substandard	Jun. 30, 2012 Consumer Performing	Dec. 31, 2011 Consumer Performing	Jun. 30, 2012 Consumer Loss	Dec. 31, 2011 Consumer Loss	Jun. 30, 2012 Consumer Direct	Dec. 31, 2011 Consumer Direct	Jun. 30, 2012 Consumer Direct Substandard	Dec. 31, 2011 Consumer Direct Substandard	Jun. 30, 2012 Consumer Direct Performing	Dec. 31, 2011 Consumer Direct Performing	Jun. 30, 2012 Consumer Direct Loss	Dec. 31, 2011 Consumer Direct Loss	Jun. 30, 2012 Consumer Indirect	Dec. 31, 2011 Consumer Indirect	Jun. 30, 2012 Consumer Indirect Substandard	Dec. 31, 2011 Consumer Indirect Substandard	Jun. 30, 2012 Consumer Indirect Performing	Dec. 31, 2011 Consumer Indirect Performing	Dec. 31, 2011 Consumer Indirect Loss
Risk category of loans
Credit relationships with an outstanding balance											$ 1,000,000
Period for which principal and interest has been in default													90 days
Loans	$ 1,546,510,000	$ 1,534,379,000	$ 723,061,000	$ 671,519,000	$ 76,118,000	$ 136,099,000	$ 61,991,000	$ 63,379,000	$ 32,716,000	$ 28,275,000									$ 144,469,000	$ 135,108,000	$ 122,893,000	$ 114,367,000	$ 100,399,000	$ 93,380,000	$ 7,459,000	$ 11,935,000	$ 11,772,000	$ 6,534,000	$ 3,263,000	$ 2,518,000	$ 21,576,000	$ 20,741,000	$ 21,547,000	$ 20,150,000	$ 524,000	$ 8,000	$ 10,000	$ 21,000	$ 57,000	$ 749,417,000	$ 764,164,000	$ 57,823,000	$ 46,308,000	$ 54,965,000	$ 42,847,000	$ 1,154,000	$ 2,151,000	$ 610,000	$ 294,000	$ 1,094,000	$ 1,016,000	$ 139,650,000	$ 146,358,000	$ 89,762,000	$ 77,259,000	$ 33,461,000	$ 51,900,000	$ 16,427,000	$ 16,815,000	$ 384,000	$ 29,918,000	$ 30,746,000	$ 19,077,000	$ 15,498,000	$ 2,228,000	$ 3,212,000	$ 3,839,000	$ 8,796,000	$ 4,774,000	$ 3,240,000	$ 522,026,000	$ 540,752,000	$ 437,311,000	$ 422,385,000	$ 31,816,000	$ 66,377,000	$ 29,335,000	$ 30,930,000	$ 23,564,000	$ 21,060,000	$ 599,299,000	$ 577,912,000	$ 8,109,000	$ 8,673,000	$ 588,749,000	$ 566,506,000	$ 2,441,000	$ 2,733,000	$ 381,374,000	$ 365,710,000	$ 6,306,000	$ 7,182,000	$ 372,876,000	$ 356,295,000	$ 2,192,000	$ 2,233,000	$ 217,925,000	$ 212,202,000	$ 1,803,000	$ 1,491,000	$ 215,873,000	$ 210,211,000	$ 249,000	$ 500,000	$ 53,325,000	$ 57,195,000	$ 132,000	$ 226,000	$ 53,185,000	$ 56,880,000	$ 8,000	$ 89,000	$ 49,566,000	$ 51,157,000	$ 114,000	$ 201,000	$ 49,444,000	$ 50,882,000	$ 8,000	$ 74,000	$ 3,759,000	$ 6,038,000	$ 18,000	$ 25,000	$ 3,741,000	$ 5,998,000	$ 15,000
Period of loans past due												90 days		60 days	119 days	89 days	60 days	119 days