Represents the number of unsecured federal funds lines of credit.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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The average effective interest rate during the reporting period.

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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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No definition available.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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- Definition

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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- Definition

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

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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BORROWINGS (Details)	9 Months Ended		12 Months Ended
BORROWINGS (Details)	Sep. 30, 2020 USD ($)	Sep. 30, 2019	Dec. 31, 2019 USD ($)	Mar. 17, 2020 USD ($)
BORROWINGS
Borrowings from FHLB	$ 18,000,000		$ 10,000,000
Number of unsecured federal funds lines of credit	3		3
Total gross loans	$ 1,507,484,000		$ 996,559,000
Federal Funds Lines of Credit One
BORROWINGS
Maximum borrowing capacity	10,000,000.0		10,000,000.0
Amount outstanding	0		0
Federal Funds Lines of Credit Two
BORROWINGS
Maximum borrowing capacity	19,000,000.0		19,000,000.0
Amount outstanding	0		0
Federal Funds Line of Credit Three
BORROWINGS
Maximum borrowing capacity	25,000,000.0		25,000,000.0
Amount outstanding	0		0
Subordinated Notes 2016 [Member]
BORROWINGS
Face amount	$ 6,600,000		6,600,000
interest rate (as a percent)	7.25%	7.25%
Subordinated Notes 2016 [Member] \| 90 Day London Interbank Offered Rate [Member]
BORROWINGS
Basis spread (as a percent)	587.00%
Subordinated Notes 2020
BORROWINGS
Face amount				$ 8,000,000.0
interest rate (as a percent)	5.125%
Issuance costs	$ 100,000
Net balance	$ 7,900,000
Subordinated Notes 2020 \| 90 Day London Interbank Offered Rate [Member]
BORROWINGS
Basis spread (as a percent)	450.00%
Credit Note [Member]
BORROWINGS
Amount outstanding	$ 0		0
Face amount	$ 5,000,000.0		5,000,000.0
interest rate (as a percent)	2.50%
Paycheck Protection Program Loan [Member]
BORROWINGS
Total gross loans	$ 204,100,000
FHLB Topeka
BORROWINGS
Amount of collateral pledged	612,100,000		515,500,000
Available balance	$ 401,900,000
August 26, 2020
BORROWINGS
Interest rate	1.94%
Borrowings from FHLB			$ 10,000,000
October 23, 2020
BORROWINGS
Borrowings from FHLB	$ 3,000,000
April 22, 2022
BORROWINGS
Interest rate	0.37%
Borrowings from FHLB	$ 5,000,000
May 5, 2023
BORROWINGS
Interest rate	0.76%
Borrowings from FHLB	$ 10,000,000