LOANS AND RELATED ALLOWANCE FOR LOAN LOSSES PAST DUE (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Recorded investment of past due [Abstract]
30 to 59 Days Past Due	$ 1,479,000	$ 1,207,000
60 to 89 Days Past Due	822,000	425,000
90 Days Or Greater	2,850,000	4,124,000
Total Past Due	5,151,000	5,756,000
Current	548,954,000	534,856,000
Total Loans	554,105,000	540,612,000
90 Days and Accruing	836,000	697,000
Financing receivables on nonaccrual status [Abstract]
Financing receivable nonaccrual status	6,599,000	8,097,000
Foregone interest income	527,000	632,000	531,000
Minimum [Member]
Recorded investment of past due [Abstract]
Period of past due after which loans considered as non accrual	90 days
Loans Considered Non-Accrual [Member]
Recorded investment of past due [Abstract]
30 to 59 Days Past Due	48,000	98,000
60 to 89 Days Past Due	181,000	164,000
90 Days Or Greater	2,014,000	3,427,000
Total Past Due	2,243,000	3,689,000
Current	4,356,000	4,408,000
Total Loans	6,599,000	8,097,000
Loans Still Accruing [Member]
Recorded investment of past due [Abstract]
30 to 59 Days Past Due	1,431,000	1,109,000
60 to 89 Days Past Due	641,000	261,000
90 Days Or Greater	836,000	697,000
Total Past Due	2,908,000	2,067,000
Current	544,598,000	530,448,000
Total Loans	547,506,000	532,515,000
Mortgages [Member]
Recorded investment of past due [Abstract]
30 to 59 Days Past Due	318,000	362,000
60 to 89 Days Past Due	230,000	40,000
90 Days Or Greater	675,000	739,000
Total Past Due	1,223,000	1,141,000
Current	121,635,000	118,743,000
Total Loans	122,858,000	119,884,000
90 Days and Accruing	214,000	301,000
Financing receivables on nonaccrual status [Abstract]
Financing receivable nonaccrual status	676,000	508,000
Home Equity [Member]
Recorded investment of past due [Abstract]
30 to 59 Days Past Due	442,000	632,000
60 to 89 Days Past Due	99,000	2,000
90 Days Or Greater	260,000	229,000
Total Past Due	801,000	863,000
Current	61,779,000	66,354,000
Total Loans	62,580,000	67,217,000
90 Days and Accruing	132,000	51,000
Financing receivables on nonaccrual status [Abstract]
Financing receivable nonaccrual status	152,000	177,000
Commercial [Member]
Recorded investment of past due [Abstract]
30 to 59 Days Past Due	97,000	88,000
60 to 89 Days Past Due	231,000	319,000
90 Days Or Greater	1,432,000	3,091,000
Total Past Due	1,760,000	3,498,000
Current	189,185,000	189,589,000
Total Loans	190,945,000	193,087,000
90 Days and Accruing	310,000	344,000
Financing receivables on nonaccrual status [Abstract]
Financing receivable nonaccrual status	5,010,000	7,247,000
Agricultural [Member]
Recorded investment of past due [Abstract]
30 to 59 Days Past Due	0	0
60 to 89 Days Past Due	0	0
90 Days Or Greater	0	0
Total Past Due	0	0
Current	24,639,000	22,001,000
Total Loans	24,639,000	22,001,000
90 Days and Accruing	0	0
Financing receivables on nonaccrual status [Abstract]
Financing receivable nonaccrual status	0	0
Construction [Member]
Recorded investment of past due [Abstract]
30 to 59 Days Past Due	0	0
60 to 89 Days Past Due	0	0
90 Days Or Greater	0	0
Total Past Due	0	0
Current	6,353,000	8,937,000
Total Loans	6,353,000	8,937,000
90 Days and Accruing	0	0
Financing receivables on nonaccrual status [Abstract]
Financing receivable nonaccrual status	0	0
Consumer [Member]
Recorded investment of past due [Abstract]
30 to 59 Days Past Due	119,000	96,000
60 to 89 Days Past Due	4,000	36,000
90 Days Or Greater	7,000	16,000
Total Past Due	130,000	148,000
Current	8,367,000	9,415,000
Total Loans	8,497,000	9,563,000
90 Days and Accruing	6,000	1,000
Financing receivables on nonaccrual status [Abstract]
Financing receivable nonaccrual status	47,000	15,000
Other Commercial Loans [Member]
Recorded investment of past due [Abstract]
30 to 59 Days Past Due	503,000	29,000
60 to 89 Days Past Due	258,000	28,000
90 Days Or Greater	476,000	49,000
Total Past Due	1,237,000	106,000
Current	46,214,000	44,382,000
Total Loans	47,451,000	44,488,000
90 Days and Accruing	174,000	0
Financing receivables on nonaccrual status [Abstract]
Financing receivable nonaccrual status	714,000	150,000
Other Agricultural Loans [Member]
Recorded investment of past due [Abstract]
30 to 59 Days Past Due	0	0
60 to 89 Days Past Due	0	0
90 Days Or Greater	0	0
Total Past Due	0	0
Current	11,065,000	9,541,000
Total Loans	11,065,000	9,541,000
90 Days and Accruing	0	0
Financing receivables on nonaccrual status [Abstract]
Financing receivable nonaccrual status	0	0
State and Political Subdivision Loans [Member]
Recorded investment of past due [Abstract]
30 to 59 Days Past Due	0	0
60 to 89 Days Past Due	0	0
90 Days Or Greater	0	0
Total Past Due	0	0
Current	79,717,000	65,894,000
Total Loans	79,717,000	65,894,000
90 Days and Accruing	0	0
Financing receivables on nonaccrual status [Abstract]
Financing receivable nonaccrual status	$ 0	$ 0