LOANS - Summary of Impaired Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Business Activities Loans
Recorded Investment
Total	$ 4,535	$ 6,709
Unpaid Principal Balance
Total	6,507	8,989
Related Allowance
With an allowance recorded:	491	424
Business Activities Loans \| Commercial Real Estate:
Recorded Investment
Total	2,585	4,481
Unpaid Principal Balance
Total	4,546	6,494
Related Allowance
With an allowance recorded:	390	193
Business Activities Loans \| Commercial Real Estate: \| Construction and land development
Recorded Investment
With no related allowance:	0	0
With an allowance recorded:	637	0
Unpaid Principal Balance
With no related allowance:	0	0
With an allowance recorded:	2,563	0
Related Allowance
With an allowance recorded:	59	0
Business Activities Loans \| Commercial Real Estate: \| Other commercial real estate
Recorded Investment
With no related allowance:	1,198	2,831
With an allowance recorded:	750	1,650
Unpaid Principal Balance
With no related allowance:	1,175	2,919
With an allowance recorded:	808	3,575
Related Allowance
With an allowance recorded:	331	193
Business Activities Loans \| Commercial and Industrial:
Recorded Investment
Total	138	486
Unpaid Principal Balance
Total	139	636
Related Allowance
With an allowance recorded:	2	173
Business Activities Loans \| Commercial and Industrial: \| Other Commercial
Recorded Investment
With no related allowance:	96	130
With an allowance recorded:	42	217
Unpaid Principal Balance
With no related allowance:	97	130
With an allowance recorded:	42	367
Related Allowance
With an allowance recorded:	2	173
Business Activities Loans \| Commercial and Industrial: \| Agricultural and other loans to farmers
Recorded Investment
With no related allowance:	0	139
With an allowance recorded:	0	0
Unpaid Principal Balance
With no related allowance:	0	139
With an allowance recorded:	0	0
Related Allowance
With an allowance recorded:	0	0
Business Activities Loans \| Commercial and Industrial: \| Tax exempt
Recorded Investment
With no related allowance:	0	0
With an allowance recorded:	0	0
Unpaid Principal Balance
With no related allowance:	0	0
With an allowance recorded:	0	0
Related Allowance
With an allowance recorded:	0	0
Business Activities Loans \| Residential Real Estate:
Recorded Investment
Total	1,744	1,709
Unpaid Principal Balance
Total	1,754	1,826
Related Allowance
With an allowance recorded:	44	49
Business Activities Loans \| Residential Real Estate: \| Residential mortgages
Recorded Investment
With no related allowance:	1,257	1,387
With an allowance recorded:	487	322
Unpaid Principal Balance
With no related allowance:	1,267	1,504
With an allowance recorded:	487	322
Related Allowance
With an allowance recorded:	44	49
Business Activities Loans \| Consumer:
Recorded Investment
Total	68	33
Unpaid Principal Balance
Total	68	33
Related Allowance
With an allowance recorded:	55	9
Business Activities Loans \| Consumer: \| Home equity
Recorded Investment
With no related allowance:	13	16
With an allowance recorded:	55	0
Unpaid Principal Balance
With no related allowance:	13	16
With an allowance recorded:	55	0
Related Allowance
With an allowance recorded:	55	0
Business Activities Loans \| Consumer: \| Other consumer
Recorded Investment
With no related allowance:	0	2
With an allowance recorded:	0	15
Unpaid Principal Balance
With no related allowance:	0	2
With an allowance recorded:	0	15
Related Allowance
With an allowance recorded:	0	$ 9
Acquired Loans
Recorded Investment
Total	1,305
Unpaid Principal Balance
Total	1,326
Related Allowance
With an allowance recorded:	168
Acquired Loans \| Commercial Real Estate:
Recorded Investment
Total	408
Unpaid Principal Balance
Total	409
Related Allowance
With an allowance recorded:	168
Acquired Loans \| Commercial Real Estate: \| Construction and land development
Recorded Investment
With no related allowance:	0
With an allowance recorded:	0
Unpaid Principal Balance
With no related allowance:	0
With an allowance recorded:	0
Related Allowance
With an allowance recorded:	0
Acquired Loans \| Commercial Real Estate: \| Other commercial real estate
Recorded Investment
With no related allowance:	108
With an allowance recorded:	300
Unpaid Principal Balance
With no related allowance:	107
With an allowance recorded:	302
Related Allowance
With an allowance recorded:	168
Acquired Loans \| Commercial and Industrial:
Recorded Investment
Total	470
Unpaid Principal Balance
Total	483
Related Allowance
With an allowance recorded:	0
Acquired Loans \| Commercial and Industrial: \| Other Commercial
Recorded Investment
With no related allowance:	470
With an allowance recorded:	0
Unpaid Principal Balance
With no related allowance:	483
With an allowance recorded:	0
Related Allowance
With an allowance recorded:	0
Acquired Loans \| Commercial and Industrial: \| Agricultural and other loans to farmers
Recorded Investment
With no related allowance:	0
With an allowance recorded:	0
Unpaid Principal Balance
With no related allowance:	0
With an allowance recorded:	0
Related Allowance
With an allowance recorded:	0
Acquired Loans \| Commercial and Industrial: \| Tax exempt
Recorded Investment
With no related allowance:	0
With an allowance recorded:	0
Unpaid Principal Balance
With no related allowance:	0
With an allowance recorded:	0
Related Allowance
With an allowance recorded:	0
Acquired Loans \| Residential Real Estate:
Recorded Investment
Total	271
Unpaid Principal Balance
Total	278
Related Allowance
With an allowance recorded:	0
Acquired Loans \| Residential Real Estate: \| Residential mortgages
Recorded Investment
With no related allowance:	271
With an allowance recorded:	0
Unpaid Principal Balance
With no related allowance:	278
With an allowance recorded:	0
Related Allowance
With an allowance recorded:	0
Acquired Loans \| Consumer:
Recorded Investment
Total	156
Unpaid Principal Balance
Total	156
Related Allowance
With an allowance recorded:	0
Acquired Loans \| Consumer: \| Home equity
Recorded Investment
With no related allowance:	156
With an allowance recorded:	0
Unpaid Principal Balance
With no related allowance:	156
With an allowance recorded:	0
Related Allowance
With an allowance recorded:	0
Acquired Loans \| Consumer: \| Other consumer
Recorded Investment
With no related allowance:	0
With an allowance recorded:	0
Unpaid Principal Balance
With no related allowance:	0
With an allowance recorded:	0
Related Allowance
With an allowance recorded:	$ 0

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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