ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY (Balance In The Allowance For Loan Losses And The Recorded Investment In Loans By Portfolio Management) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Ending allowance balance attributable to loans:
Individually evaluated for impairment	$ 4,114	$ 3,659
Collectively evaluated for impairment	39,604	39,951
Total ending allowance balance	43,718	43,610	$ 46,262	$ 48,797
Loans:
Loans individually evaluated for impairment	20,692	20,579
Loans collectively evaluated for impairment	3,450,235	3,060,350
Total ending loans balance	3,470,927	3,080,929
Commercial and Industrial Loans [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	3,191	2,781
Collectively evaluated for impairment	17,081	18,783
Total ending allowance balance	20,272	21,564	22,785	21,005
Loans:
Loans individually evaluated for impairment	9,776	8,286
Loans collectively evaluated for impairment	1,258,682	1,171,407
Total ending loans balance	1,268,458	1,179,693
Commercial Real Estate and Multi-Family Residential Loans [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	576	465
Collectively evaluated for impairment	12,876	12,008
Total ending allowance balance	13,452	12,473	14,153	18,556
Loans:
Loans individually evaluated for impairment	9,151	9,823
Loans collectively evaluated for impairment	1,290,131	1,119,150
Total ending loans balance	1,299,282	1,128,973
Agri Business and Agricultural Loans [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	3,532	2,445
Total ending allowance balance	3,532	2,445	1,790	1,682
Loans:
Loans individually evaluated for impairment	283	471
Loans collectively evaluated for impairment	394,621	305,707
Total ending loans balance	394,904	306,178
Other Commercial [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	0	5
Collectively evaluated for impairment	461	569
Total ending allowance balance	461	574	276	391
Loans:
Loans individually evaluated for impairment	0	12
Loans collectively evaluated for impairment	98,265	85,059
Total ending loans balance	98,265	85,071
Consumer 1-4 Family Mortgage Loans [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	296	358
Collectively evaluated for impairment	2,531	3,037
Total ending allowance balance	2,827	3,395	3,459	3,046
Loans:
Loans individually evaluated for impairment	1,427	1,927
Loans collectively evaluated for impairment	347,408	330,072
Total ending loans balance	348,835	331,999
Other Consumer [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	51	50
Collectively evaluated for impairment	336	269
Total ending allowance balance	387	319	483	608
Loans:
Loans individually evaluated for impairment	55	60
Loans collectively evaluated for impairment	61,128	48,955
Total ending loans balance	61,183	49,015
Unallocated [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	2,787	2,840
Total ending allowance balance	2,787	2,840	$ 3,316	$ 3,509
Loans:
Loans individually evaluated for impairment	0	0
Loans collectively evaluated for impairment	0	0
Total ending loans balance	$ 0	$ 0