ALLOWANCE FOR CREDIT LOSSES (Allowance For Credit Losses By Segment, Class And Impairment Status) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Recorded balance of impaired loans	$ 22,821,000	$ 54,943,000
Allowance for impaired loans and leases	1,239,000	4,146,000
Allowance for all other loans and leases	142,711,000	149,090,000
Total allowance	143,950,000	153,236,000	153,974,000	164,466,000
Evaluated for impairment threshold	500,000
Commercial And Industrial [Member]
Financing Receivable, Impaired [Line Items]
Recorded balance of impaired loans	1,254,000	1,314,000
Allowance for impaired loans and leases		305,000
Allowance for all other loans and leases	21,328,000	18,071,000
Total allowance	21,328,000	18,376,000	19,332,000	23,286,000
Real Estate [Member] | Consumer Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Recorded balance of impaired loans	4,248,000	6,406,000
Allowance for impaired loans and leases	143,000	309,000
Allowance for all other loans and leases	41,285,000	39,216,000
Total allowance	41,428,000	39,525,000	36,367,000	35,966,000
Real Estate [Member] | Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Recorded balance of impaired loans	627,000	1,140,000
Allowance for impaired loans and leases	76,000	37,000
Allowance for all other loans and leases	9,564,000	5,626,000
Total allowance	9,640,000	5,663,000	5,660,000	6,005,000
Real Estate [Member] | Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded balance of impaired loans	266,000	882,000
Allowance for impaired loans and leases		15,000
Allowance for all other loans and leases	3,698,000	2,785,000
Total allowance	3,698,000	2,800,000	2,802,000	3,301,000
Real Estate [Member] | Commercial And Industrial - Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Recorded balance of impaired loans	3,935,000	11,745,000
Allowance for impaired loans and leases	256,000	739,000
Allowance for all other loans and leases	17,001,000	16,320,000
Total allowance	17,257,000	17,059,000	17,714,000	20,178,000
Real Estate [Member] | Construction, Acquisition And Development [Member]
Financing Receivable, Impaired [Line Items]
Recorded balance of impaired loans	3,532,000	15,712,000
Allowance for impaired loans and leases		1,599,000
Allowance for all other loans and leases	10,174,000	10,229,000
Total allowance	10,174,000	11,828,000	12,925,000	21,905,000
Real Estate [Member] | Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded balance of impaired loans	8,783,000	17,481,000
Allowance for impaired loans and leases	764,000	1,138,000
Allowance for all other loans and leases	22,437,000	42,715,000
Total allowance	23,201,000	43,853,000	44,788,000	40,081,000
Credit Cards [Member]
Financing Receivable, Impaired [Line Items]
Allowance for all other loans and leases	5,855,000	3,782,000
Total allowance	5,855,000	3,782,000	3,582,000	3,611,000
All Other [Member]
Financing Receivable, Impaired [Line Items]
Recorded balance of impaired loans	176,000	263,000
Allowance for impaired loans and leases		4,000
Allowance for all other loans and leases	11,369,000	10,346,000
Total allowance	$ 11,369,000	$ 10,350,000	$ 10,804,000	$ 10,133,000