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INCOME TAXES - Reconciliation of the U.S. Federal Income Tax Rate to Income Before Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
INCOME TAXES    
Income tax rate 21.00% 21.00%
Income before income taxes    
Expected income tax expense (benefit) at federal tax rate $ 507 $ (247)
Bank-owned life insurance income (19) (15)
Tax free investment securities income (8) (10)
Benefit from NOL carryback   (196)
Nondeductible stock-based compensation expense 4  
Other 3 (6)
Total income tax expense (benefit) $ 487 $ (474)