LOAN (Total Loans Outstanding) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commercial loans	$ 2,212,573	$ 1,929,359
Total consumer loans	323,155	328,485
Subtotal	2,535,728	2,257,844
Less: Allowance for loan losses	(48,797)	(51,445)	(53,400)	(45,007)
Net deferred loan fees	(630)	(324)
Loans, net	2,486,301	2,206,075
Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commercial loans	901,567	846,822
Less: Allowance for loan losses	(21,005)	(22,342)	(22,830)	(21,479)
Commercial and Industrial Loans [Member] | Working Capital Lines Of Credit Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commercial loans	457,690	439,638
Commercial and Industrial Loans [Member] | Non-working Capital Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commercial loans	443,877	407,184
Commercial Real Estate and Multi-family Residential Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commercial loans	986,207	801,011
Commercial Real Estate and Multi-family Residential Loans [Member] | Construction and Land Development Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commercial loans	157,630	82,494
Commercial Real Estate and Multi-family Residential Loans [Member] | Owner Occupied Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commercial loans	370,386	358,617
Commercial Real Estate and Multi-family Residential Loans [Member] | Nonowner Occupied Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commercial loans	394,748	314,889
Commercial Real Estate and Multi-family Residential Loans [Member] | Multifamily Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commercial loans	63,443	45,011
Agri-business and Agricultural Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commercial loans	254,029	224,719
Less: Allowance for loan losses	(1,682)	(1,403)	(695)	(1,318)
Agri-business and Agricultural Loans [Member] | Loans Secured By Farmland [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commercial loans	133,458	109,147
Agri-business and Agricultural Loans [Member] | Loans For Agricultural Production [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commercial loans	120,571	115,572
Other Commerical Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commercial loans	70,770	56,807
Total Consumer 1 To 4 Family Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commercial loans	277,030	282,730
Total Consumer 1 To 4 Family Mortgage Loans [Member] | Closed End First Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commercial loans	125,444	109,823
Total Consumer 1 To 4 Family Mortgage Loans [Member] | Open End And Junior Lien Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commercial loans	146,946	161,366
Total Consumer 1 To 4 Family Mortgage Loans [Member] | Residential Construction and Land Development Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total commercial loans	4,640	11,541
Other Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans	$ 46,125	$ 45,755