BORROWINGS (Details) $ in Thousands	6 Months Ended
Jun. 30, 2018 USD ($) fund	Dec. 31, 2017 USD ($)
BORROWINGS
Number of unsecured federal funds lines of credit \| fund	2
Federal Funds Lines of Credit One
BORROWINGS
Maximum borrowing capacity	$ 13,000
Amount outstanding	0	$ 0
Federal Funds Lines of Credit Two
BORROWINGS
Maximum borrowing capacity	25,000
Amount outstanding	0	0
Federal Home Loan Bank Of Topeka
BORROWINGS
Amount of collateral pledged	424,300	361,700
Available balance	202,400
Borrowings from FHLB	$ 75,598	28,563
August 3, 2018
BORROWINGS
Interest rate	2.11%
Borrowings from FHLB	$ 55,598	8,563
October 31, 2018
BORROWINGS
Interest rate	1.75%
Borrowings from FHLB	$ 10,000	10,000
August 26, 2020
BORROWINGS
Interest rate	1.94%
Borrowings from FHLB	$ 10,000	$ 10,000

Represents the number of unsecured federal funds lines of credit.

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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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Discloses the single interest rate [if] applicable to the advances from the Federal Home Loan Bank, by branch, as of the Balance Sheet date.

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- Definition

Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

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- Definition

Amount of the collateral pledged in support of federal home loan bank advances outstanding.

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Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.

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- Definition

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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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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