LOANS, Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Impaired loans [Abstract]
Unpaid contractual principal balance	$ 8,226		$ 8,226		$ 9,693
Recorded investment with no allowance	2,398		2,398		3,767
Recorded investment with allowance	4,727		4,727		5,234
Total recorded investment	7,125		7,125		9,001
Related allowance	446		446		470
Interest income on impaired loans recognized using an accrual method of accounting [Abstract]
Average recorded investment	7,810	$ 9,842	8,208	$ 10,214
Interest income recognized	76	54	153	115
Commercial [Member]
Impaired loans [Abstract]
Unpaid contractual principal balance	3,241		3,241		3,882
Recorded investment with no allowance	395		395		1,057
Recorded investment with allowance	2,140		2,140		2,603
Total recorded investment	2,535		2,535		3,660
Related allowance	45		45		53
Interest income on impaired loans recognized using an accrual method of accounting [Abstract]
Average recorded investment	2,863	4,542	3,129	4,887
Interest income recognized	45	8	91	17
Commercial Real Estate [Member]
Impaired loans [Abstract]
Unpaid contractual principal balance	2,074		2,074		2,114
Recorded investment with no allowance	1,655		1,655		1,724
Recorded investment with allowance	267		267		272
Total recorded investment	1,922		1,922		1,996
Related allowance	35		35		36
Interest income on impaired loans recognized using an accrual method of accounting [Abstract]
Average recorded investment	1,934	1,164	1,955	1,050
Interest income recognized	4	4	7	8
Agriculture [Member]
Impaired loans [Abstract]
Unpaid contractual principal balance	0		0		0
Recorded investment with no allowance	0		0		0
Recorded investment with allowance	0		0		0
Total recorded investment	0		0		0
Related allowance	0		0		0
Interest income on impaired loans recognized using an accrual method of accounting [Abstract]
Average recorded investment	0	0	0	0
Interest income recognized	0	0	0	0
Residential Mortgage [Member]
Impaired loans [Abstract]
Unpaid contractual principal balance	1,819		1,819		2,628
Recorded investment with no allowance	111		111		781
Recorded investment with allowance	1,474		1,474		1,496
Total recorded investment	1,585		1,585		2,277
Related allowance	304		304		302
Interest income on impaired loans recognized using an accrual method of accounting [Abstract]
Average recorded investment	1,888	2,736	2,018	2,835
Interest income recognized	15	23	30	54
Residential Construction [Member]
Impaired loans [Abstract]
Unpaid contractual principal balance	637		637		651
Recorded investment with no allowance	0		0		0
Recorded investment with allowance	637		637		650
Total recorded investment	637		637		650
Related allowance	58		58		76
Interest income on impaired loans recognized using an accrual method of accounting [Abstract]
Average recorded investment	641	808	644	812
Interest income recognized	9	10	19	19
Consumer [Member]
Impaired loans [Abstract]
Unpaid contractual principal balance	455		455		418
Recorded investment with no allowance	237		237		205
Recorded investment with allowance	209		209		213
Total recorded investment	446		446		418
Related allowance	4		4		$ 3
Interest income on impaired loans recognized using an accrual method of accounting [Abstract]
Average recorded investment	484	592	462	630
Interest income recognized	$ 3	$ 9	$ 6	$ 17