BORROWINGS (Details)	12 Months Ended
Dec. 31, 2017 USD ($) item	Dec. 31, 2016 USD ($)
BORROWINGS
Borrowings	$ 79,552,000	$ 67,579,000
LIBOR
BORROWINGS
Variable rate basis	LIBOR
Federal Home Loan Bank borrowings
BORROWINGS
Borrowings	$ 60,000,000	45,000,000
Interest rate on note (as a percent)	1.66%
Federal Home Loan Bank borrowings \| Mortgage related and municipal securities
BORROWINGS
Securities pledged as collateral, amortized cost	$ 2,482,000
Securities pledged as collateral, fair value	2,460,000
Federal Home Loan Bank borrowings \| FHLB stock
BORROWINGS
Stock owned and pledged as collateral	3,112,000
Federal Home Loan Bank borrowings \| One to four family residential real estate
BORROWINGS
Loans pledged as collateral	$ 72,552,000
Correspondent bank line of credit
BORROWINGS
Borrowings		750,000
Number of banking borrowing relationships \| item	1
Quarterly principal payment	$ 550,000
Correspondent bank line of credit \| LIBOR
BORROWINGS
Variable rate (as a percent)	2.75%
Correspondent bank term note
BORROWINGS
Borrowings	$ 18,999,000	21,199,000
USDA Rural Development note
BORROWINGS
Borrowings	$ 553,000	$ 630,000
Interest rate on note (as a percent)	1.00%
USDA Rural Development note \| First Rural Relending
BORROWINGS
Loans pledged as collateral	$ 553,000
Demand deposit account pledged as collateral	619,000
Revolving Credit Facility
BORROWINGS
Line of Credit	$ 5,000,000
Revolving Credit Facility \| LIBOR
BORROWINGS
LIBOR rate at point of time	1.69%

Represents the cost of available-for-sale securities that serve as collateral for borrowings.

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Represents the demand deposit accounts that serve as collateral for borrowings.

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LIBOR rate at point of time.

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Number of banking borrowing relationships.

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Cost of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at cost and pledged to counterparties as collateral for financing transactions.

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The fair value of available-for-sale securities that serve as collateral for borrowings.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of the required periodic payments applied to principal.

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Weighted average interest rate of debt outstanding.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered.

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