ALLOWANCE FOR CREDIT LOSSES (Changes In The Allowance For Credit Losses By Segment And Class) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision	$ 1,000	$ 2,000	$ 2,000	$ 3,000
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			19,170	17,583	$ 17,583
Charge-offs			(4,157)	(888)	(4,551)
Recoveries			1,524	551	1,833
Provision			(408)	473	4,305
Balance at end of period	16,129	17,719	16,129	17,719	19,170
Real Estate [Member] | Consumer Mortgages [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			30,386	33,198	33,198
Charge-offs			(1,118)	(1,187)	(2,687)
Recoveries			964	954	1,694
Provision			3,312	260	(1,819)
Balance at end of period	33,544	33,225	33,544	33,225	30,386
Real Estate [Member] | Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			7,174	6,949	6,949
Charge-offs			(584)	(774)	(1,884)
Recoveries			466	326	506
Provision			(96)	666	1,603
Balance at end of period	6,960	7,167	6,960	7,167	7,174
Real Estate [Member] | Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			2,172	2,524	2,524
Charge-offs			(50)	(21)	(110)
Recoveries			75	132	175
Provision			(346)	(272)	(417)
Balance at end of period	1,851	2,363	1,851	2,363	2,172
Real Estate [Member] | Commercial And Industrial - Owner Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			12,899	14,607	14,607
Charge-offs			(1,864)	(814)	(1,095)
Recoveries			674	226	544
Provision			1,081	(377)	(1,157)
Balance at end of period	12,790	13,642	12,790	13,642	12,899
Real Estate [Member] | Construction, Acquisition And Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			13,957	15,925	15,925
Charge-offs			(84)	(506)	(521)
Recoveries			1,532	796	1,373
Provision			(1,873)	(679)	(2,820)
Balance at end of period	13,532	15,536	13,532	15,536	13,957
Real Estate [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			24,845	25,508	25,508
Charge-offs			(20)	(1,115)	(1,129)
Recoveries			144	1,192	2,411
Provision			(1,866)	2,103	(1,945)
Balance at end of period	23,103	27,688	23,103	27,688	24,845
Credit Cards [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			7,787	4,047	4,047
Charge-offs			(1,619)	(1,334)	(2,845)
Recoveries			454	380	850
Provision			(277)	346	5,735
Balance at end of period	6,345	3,439	6,345	3,439	7,787
All Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			5,346	6,117	6,117
Charge-offs			(1,150)	(904)	(2,197)
Recoveries			638	463	911
Provision			2,473	480	515
Balance at end of period	$ 7,307	$ 6,156	$ 7,307	$ 6,156	$ 5,346