ALLOWANCE FOR LOAN LOSSES: (Details 3) (Nonperforming Financing Receivable, USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	$ 873
Accrual	4,632
Non-accrual	15,034
Commercial & Industrial
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	0
Accrual	7
Non-accrual	3,720
Farmland
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	0
Accrual	0
Non-accrual	79
Non Farm, Non Residential
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	0
Accrual	10
Non-accrual	3,388
Agriculture
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	0
Accrual	0
Non-accrual	767
All Other Commercial
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	0
Accrual	0
Non-accrual	1,258
First Liens
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	603
Accrual	4,357
Non-accrual	3,861
Home Equity
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	88
Accrual	0
Non-accrual	404
Junior Liens
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	12
Accrual	0
Non-accrual	275
Multifamily
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	0
Accrual	0
Non-accrual	0
All Other Residential
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	5
Accrual	0
Non-accrual	111
Motor Vehicle
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	162
Accrual	257
Non-accrual	210
All Other Consumer
Aging of recorded investment in loans by past due category and class of loans
Loans Past Due Over 90 Day Still Accruing	3
Accrual	1
Non-accrual	$ 961