FAIR VALUE (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Fair Value Measurements
Blended interest rate for determining fair value of nonaccrual loans (as a percent)	0.00%
Fair value of commitments	$ 0
Financial assets:
Interest-bearing deposits	2,917	$ 10,295
Marketable Securities	111,836
Carrying Amount
Financial assets:
Total financial assets	1,414,740	1,230,236
Financial liabilities:
Total financial liabilities	1,322,708	1,140,797
Estimated Fair Value
Financial assets:
Total financial assets	1,415,734	1,232,753
Financial liabilities:
Total financial liabilities	1,325,358	1,109,239
Level 1 | Carrying Amount
Financial assets:
Cash and cash equivalents	218,977	49,826
Level 1 | Estimated Fair Value
Financial assets:
Cash and cash equivalents	218,977	49,826
Level 2 | Carrying Amount
Financial assets:
Interest-bearing deposits	2,917	10,295
Federal Home Loan Bank stock	4,924	4,924
Financial liabilities:
Deposits	1,258,776	1,075,677
Borrowings	63,479	64,551
Level 2 | Estimated Fair Value
Financial assets:
Interest-bearing deposits	2,917	10,295
Federal Home Loan Bank stock	4,924	4,924
Financial liabilities:
Deposits	1,262,930	1,044,267
Borrowings	61,975	64,403
Level 3 | Carrying Amount
Financial assets:
Net loans	1,071,776	1,053,468
Accrued interest receivable	4,310	3,751
Financial liabilities:
Accrued interest payable	453	569
Level 3 | Estimated Fair Value
Financial assets:
Net loans	1,072,770	1,055,985
Accrued interest receivable	4,310	3,751
Financial liabilities:
Accrued interest payable	453	569
Available-for-sale Securities
Financial assets:
Marketable Securities	111,836	107,972
Available-for-sale Securities | Level 2 | Carrying Amount
Financial assets:
Marketable Securities	110,505	106,569
Available-for-sale Securities | Level 2 | Estimated Fair Value
Financial assets:
Marketable Securities	110,505	106,569
Available-for-sale Securities | Level 3 | Carrying Amount
Financial assets:
Marketable Securities	1,331	1,403
Available-for-sale Securities | Level 3 | Estimated Fair Value
Financial assets:
Marketable Securities	1,331	1,403
Corporate
Financial assets:
Marketable Securities	28,043	20,938
US Agencies
Financial assets:
Marketable Securities	6,589	14,496
US Agencies - MBS
Financial assets:
Marketable Securities	34,280	34,526
Obligations of states and political subdivisions
Financial assets:
Marketable Securities	$ 42,924	$ 38,012