LOANS RECEIVABLE AND THE ALLOWANCE FOR CREDIT LOSSES (Collateral Secured) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	$ 15,797	$ 19,609
Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	14,444	18,578
Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	659	0
Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	694	1,031
Owner-occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	3,949	7,506
Owner-occupied | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	3,949	7,506
Owner-occupied | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Owner-occupied | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Commercial real estate - investment properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	7,468	8,979
Commercial real estate - investment properties | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	7,468	8,979
Commercial real estate - investment properties | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Commercial real estate - investment properties | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Small balance CRE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	2,452	567
Small balance CRE | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	2,452	567
Small balance CRE | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Small balance CRE | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Land and land development—residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost		302
Land and land development—residential | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost		302
Land and land development—residential | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost		0
Land and land development—residential | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost		0
Commercial Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	822	557
Commercial Business | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	107	557
Commercial Business | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	659	0
Commercial Business | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	56	0
Small business scored
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	85	91
Small business scored | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	41	44
Small business scored | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Small business scored | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	44	47
Agricultural Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	1,021	1,411
Agricultural Business | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	427	427
Agricultural Business | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Agricultural Business | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	$ 594	984
One- to Four-Family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost		196
One- to Four-Family Residential | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost		196
One- to Four-Family Residential | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost		0
One- to Four-Family Residential | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost		$ 0