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, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance January 1,	$ 51,445	$ 53,400
Provision for loan losses	0	799
Loans charged-off	(1,206)	(1,733)
Recoveries	579	291
Net loans charged-off	(627)	(1,442)
Balance March 31,	50,818	52,757
Ending allowance balance attributable to loans:
Individually evaluated for impairment	11,861	17,373	14,805
Collectively evaluated for impairment	38,957		36,640
Total ending allowance balance	50,818	52,757
Loans:
Loans individually evaluated for impairment	47,693		58,942
Loans collectively evaluated for impairment	2,214,767		2,198,578
Total ending loan balance	2,262,460		2,257,520
Commercial and Industrial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance January 1,	22,342	22,830
Provision for loan losses	(359)	(104)
Loans charged-off	(133)	(778)
Recoveries	263	186
Net loans charged-off	130	(592)
Balance March 31,	22,113	22,134
Ending allowance balance attributable to loans:
Individually evaluated for impairment	4,757	8,478	5,542
Collectively evaluated for impairment	17,356		16,800
Total ending allowance balance	22,113	22,134
Loans:
Loans individually evaluated for impairment	16,650		18,281
Loans collectively evaluated for impairment	825,817		828,728
Total ending loan balance	842,467	780,828	847,009
Commercial Real Estate and Multi-Family Residential Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance January 1,	20,812	23,489
Provision for loan losses	253	565
Loans charged-off	(906)	(847)
Recoveries	261	29
Net loans charged-off	(645)	(818)
Balance March 31,	20,420	23,236
Ending allowance balance attributable to loans:
Individually evaluated for impairment	6,621	8,274	8,559
Collectively evaluated for impairment	13,799		12,253
Total ending allowance balance	20,420	23,236
Loans:
Loans individually evaluated for impairment	27,394		36,919
Loans collectively evaluated for impairment	819,624		763,279
Total ending loan balance	847,018	834,692	800,198
Agri-business and Agricultural Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance January 1,	1,403	695
Provision for loan losses	(142)	(157)
Loans charged-off	0	0
Recoveries	2	0
Net loans charged-off	2	0
Balance March 31,	1,263	538
Ending allowance balance attributable to loans:
Individually evaluated for impairment	43	138	63
Collectively evaluated for impairment	1,220		1,340
Total ending allowance balance	1,263	538
Loans:
Loans individually evaluated for impairment	975		797
Loans collectively evaluated for impairment	203,970		224,008
Total ending loan balance	204,945	217,173	224,805
Other Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance January 1,	240	65
Provision for loan losses	(17)	119
Loans charged-off	0	0
Recoveries	0	2
Net loans charged-off	0	2
Balance March 31,	223	186
Ending allowance balance attributable to loans:
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	223		240
Total ending allowance balance	223	186
Loans:
Loans individually evaluated for impairment	0		0
Loans collectively evaluated for impairment	48,863		56,810
Total ending loan balance	48,863		56,810
Consumer 1-4 Family Mortgage Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance January 1,	2,682	2,322
Provision for loan losses	270	171
Loans charged-off	(108)	(14)
Recoveries	22	48
Net loans charged-off	(86)	34
Balance March 31,	2,866	2,527
Ending allowance balance attributable to loans:
Individually evaluated for impairment	412	478	607
Collectively evaluated for impairment	2,454		2,075
Total ending allowance balance	2,866	2,527
Loans:
Loans individually evaluated for impairment	2,594		2,853
Loans collectively evaluated for impairment	274,727		280,141
Total ending loan balance	277,321	289,133	282,994
Other Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance January 1,	609	645
Provision for loan losses	(23)	(54)
Loans charged-off	(59)	(94)
Recoveries	31	26
Net loans charged-off	(28)	(68)
Balance March 31,	558	523
Ending allowance balance attributable to loans:
Individually evaluated for impairment	28		34
Collectively evaluated for impairment	530		575
Total ending allowance balance	558	523
Loans:
Loans individually evaluated for impairment	80		92
Loans collectively evaluated for impairment	41,766		45,612
Total ending loan balance	41,846	44,941	45,704
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance January 1,	3,357	3,354
Provision for loan losses	18	259
Loans charged-off	0	0
Recoveries	0	0
Net loans charged-off	0	0
Balance March 31,	3,375	3,613
Ending allowance balance attributable to loans:
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	3,375		3,357
Total ending allowance balance	3,375	3,613
Loans:
Loans individually evaluated for impairment	0		0
Loans collectively evaluated for impairment	0		0
Total ending loan balance	$ 0		$ 0