FAIR VALUE - Fair value hierarchy of financial instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financial assets - Carrying Amount
Cash and cash equivalents	$ 68,840
Loans receivable, net	201,872	$ 207,922
Cash value of life insurance	8,375
Financial liabilities - Carrying Amount
Deposits	387,774	383,247
Long-term debt	10,000	10,000
Short-term debt	10,000	10,000
Financial assets - Fair Value
Loans receivable, net	201,975	211,541
Financial liabilities - Fair Value
Deposits	387,250	383,910
Long-term debt	9,930	9,888
Short-term debt	9,759	$ 10,000
Fair Value
Financial assets - Fair Value
Cash and cash equivalents	68,840
Loans receivable, net	201,975
Cash value of life insurance	8,375
Financial liabilities - Fair Value
Deposits	387,250
Long-term debt	9,930
Short-term debt	9,759
Fair Value | Level 1
Financial assets - Fair Value
Cash and cash equivalents	68,840
Financial liabilities - Fair Value
Deposits	155,680
Fair Value | Level 2
Financial assets - Fair Value
Cash value of life insurance	8,375
Financial liabilities - Fair Value
Deposits	231,570
Long-term debt	9,930
Short-term debt	9,759
Fair Value | Level 3
Financial assets - Fair Value
Loans receivable, net	$ 201,975