FAIR VALUE, Assets and Liabilities Measured on Nonrecurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets and Liabilities Measured on Nonrecurring Basis [Abstract]
Impaired loans	$ 848	$ 848
Other real estate owned	1,469	1,270
Mortgage servicing rights	52	56
Valuation allowance	0	0
Mortgage Servicing Rights [Member]
Assets and Liabilities Measured on Nonrecurring Basis [Abstract]
Valuation allowance	200	300
Non-recurring [Member]
Assets and Liabilities Measured on Nonrecurring Basis [Abstract]
Impaired loans	848	848
Other real estate owned	1,469	1,270
Mortgage servicing rights	52	56
Total	2,369	2,174
Non-recurring [Member] | Level 1 [Member]
Assets and Liabilities Measured on Nonrecurring Basis [Abstract]
Impaired loans	0	0
Other real estate owned	0	0
Mortgage servicing rights	0	0
Total	0	0
Non-recurring [Member] | Level 2 [Member]
Assets and Liabilities Measured on Nonrecurring Basis [Abstract]
Impaired loans	0	0
Other real estate owned	0	0
Mortgage servicing rights	0	0
Total	0	0
Non-recurring [Member] | Level 3 [Member]
Assets and Liabilities Measured on Nonrecurring Basis [Abstract]
Impaired loans	848	848
Other real estate owned	1,469	1,270
Mortgage servicing rights	52	56
Total	$ 2,369	$ 2,174