LOANS AND THE ALLOWANCE FOR LOAN LOSSES - Allowance for loan losses by portfolio (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 7,451	$ 7,287
Provision for (recovery of) credit losses	194	(187)
Ending balance	7,645	7,100
Individually evaluated	940		$ 6,511
Collectively evaluated	6,705		940
Loans individually evaluated	17,500		17,835
Loans collectively evaluated	912,365		874,960
Total Recorded Investment	929,865		892,795
Cash, Securities and Other
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	764	1,066
Provision for (recovery of) credit losses	113	(97)
Ending balance	877	969
Individually evaluated			764
Collectively evaluated	877
Loans individually evaluated	10,977		11,252
Loans collectively evaluated	119,664		102,913
Total Recorded Investment	130,641		114,165
Construction and Development
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	232	202
Provision for (recovery of) credit losses	34	26
Ending balance	266	228
Individually evaluated			232
Collectively evaluated	266
Loans collectively evaluated	37,128		31,897
Total Recorded Investment	37,128		31,897
1-4 Family Residential
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	2,552	2,283
Provision for (recovery of) credit losses	36	51
Ending balance	2,588	2,334
Individually evaluated			2,552
Collectively evaluated	2,588
Loans collectively evaluated	360,607		350,852
Total Recorded Investment	360,607		350,852
Non-Owner Occupied CRE
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	1,264	1,433
Provision for (recovery of) credit losses	(29)	(120)
Ending balance	1,235	1,313
Individually evaluated			1,264
Collectively evaluated	1,235
Loans collectively evaluated	172,014		173,741
Total Recorded Investment	172,014		173,741
Owner Occupied CRE
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	789	751
Provision for (recovery of) credit losses	(9)	(27)
Ending balance	780	724
Individually evaluated			789
Collectively evaluated	780
Loans collectively evaluated	108,873		108,480
Total Recorded Investment	108,873		108,480
Commercial and Industrial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	1,850	1,552
Provision for (recovery of) credit losses	49	(20)
Ending balance	1,899	$ 1,532
Individually evaluated	940		910
Collectively evaluated	959		940
Loans individually evaluated	6,523		6,583
Loans collectively evaluated	114,079		107,077
Total Recorded Investment	$ 120,602		$ 113,660

A valuation allowance for financing receivables that are expected to be uncollectible.

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- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

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- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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The balance of financing receivables that were collectively evaluated for impairment.

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- Definition

The balance of financing receivables that were individually evaluated for impairment.

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- Definition

Amount, before allowance and fees, of loans and leases receivable. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
-URI http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

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