INCOME TAXES, Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets [Abstract]
Allowance for loan loss	$ 5,081	$ 4,857
Deferred compensation	4,669	4,560
Other real estate owned	251	320
Nonaccrual loans	180	169
Unrealized loss on available-for-sale securities	0	596
Other	162	174
Total deferred tax assets	10,343	10,676
Deferred tax liabilities [Abstract]
Depreciation	(2,417)	(2,331)
Intangibles	(924)	0
Prepaid expenses	(419)	(390)
Mortgage servicing rights	(431)	(267)
Unrealized gain on available-for-sale securities	(255)	0
Other	(278)	(197)
Total deferred tax liabilities	(4,724)	(3,185)
Net deferred tax asset	$ 5,619	$ 7,491