LOANS, Non-accrual and Past Due Loans (Details)	Sep. 30, 2016 USD ($) Loan	Dec. 31, 2015 USD ($) Loan	Sep. 30, 2015 USD ($)
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	$ 6,311,000	$ 2,728,000
Total past due	6,261,000	1,090,000
Current	647,285,000	613,005,000
Total	$ 653,546,000	$ 614,095,000	$ 599,831,000
Number of loans 90 days past due and still accruing | Loan	0	1
Loans 90 days past due and still accruing	$ 0	$ 2,000
30-59 Days Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	612,000	367,000
60-89 Days Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	5,094,000	5,000
90 Days or More Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	555,000	718,000
Commercial [Member]
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	$ 5,042,000	$ 112,000
Number of nonaccrual loans | Loan	2	4
Total past due	$ 5,190,000	$ 275,000
Current	122,649,000	135,820,000
Total	127,839,000	136,095,000	129,614,000
Commercial [Member] | 30-59 Days Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	100,000	218,000
Commercial [Member] | 60-89 Days Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	5,090,000	0
Commercial [Member] | 90 Days or More Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	0	57,000
Commercial Real Estate [Member]
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	$ 559,000	$ 964,000
Number of nonaccrual loans | Loan	2	4
Total past due	$ 0	$ 362,000
Current	322,622,000	291,954,000
Total	322,622,000	292,316,000	296,421,000
Commercial Real Estate [Member] | 30-59 Days Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	0	130,000
Commercial Real Estate [Member] | 60-89 Days Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	0	0
Commercial Real Estate [Member] | 90 Days or More Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	0	232,000
Agriculture [Member]
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	0	0
Total past due	0	0
Current	97,257,000	84,813,000
Total	97,257,000	84,813,000	74,138,000
Agriculture [Member] | 30-59 Days Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	0	0
Agriculture [Member] | 60-89 Days Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	0	0
Agriculture [Member] | 90 Days or More Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	0	0
Residential Mortgage [Member]
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	$ 553,000	$ 1,092,000
Number of nonaccrual loans | Loan	2	4
Total past due	$ 675,000	$ 0
Current	41,005,000	43,375,000
Total	41,680,000	43,375,000	42,666,000
Residential Mortgage [Member] | 30-59 Days Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	120,000	0
Residential Mortgage [Member] | 60-89 Days Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	0	0
Residential Mortgage [Member] | 90 Days or More Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	555,000	0
Residential Construction [Member]
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	0	0
Total past due	0	0
Current	20,596,000	12,110,000
Total	20,596,000	12,110,000	11,313,000
Residential Construction [Member] | 30-59 Days Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	0	0
Residential Construction [Member] | 60-89 Days Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	0	0
Residential Construction [Member] | 90 Days or More Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	0	0
Consumer [Member]
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	$ 157,000	$ 560,000
Number of nonaccrual loans | Loan	2	4
Total past due	$ 396,000	$ 453,000
Current	43,156,000	44,933,000
Total	43,552,000	45,386,000	$ 45,679,000
Consumer [Member] | 30-59 Days Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	392,000	19,000
Consumer [Member] | 60-89 Days Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	4,000	5,000
Consumer [Member] | 90 Days or More Past Due [Member]
Non-accrual and Past Due Loans [Abstract]
Total past due	$ 0	$ 429,000