LOANS - Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Recorded Investment
With no related allowance recorded	$ 5,282		$ 5,282		$ 5,129
With an allowance recorded	894		894		2,509
Total	6,176		6,176		7,638
Unpaid Principal Balance
With no related allowance recorded	6,403		6,403		5,533
With an allowance recorded	890		890		2,484
Total	7,293		7,293		8,017
Related Allowance	25		25		815
Average Recorded Investment
With no related allowance recorded	5,459	$ 6,910	5,312	$ 6,012
With an allowance recorded	898	1,475	1,587	1,242
Total	6,357	8,385	6,899	7,254
Interest Income
With no related allowance recorded	33	68	61	107
With an allowance recorded	10	12	21	24
Total	43	80	82	131
Cash Basis Interest
With no related allowance recorded	28	34	51	37
With an allowance recorded	0	0	0	0
Total	28	34	51	37
Multifamily residential
Recorded Investment
With no related allowance recorded	533		533		541
Total	533		533		541
Unpaid Principal Balance
With no related allowance recorded	609		609		618
Total	609		609		618
Related Allowance	0		0		0
Average Recorded Investment
With no related allowance recorded	535	2,195	537	1,494
Total	535	2,195	537	1,494
Interest Income
With no related allowance recorded	8	9	17	12
Total	8	9	17	12
Cash Basis Interest
With no related allowance recorded	8	9	17	12
Total	8	9	17	12
Single family residential
Recorded Investment
With no related allowance recorded	4,749		4,749		4,588
With an allowance recorded	894		894		2,509
Total	5,643		5,643		7,097
Unpaid Principal Balance
With no related allowance recorded	5,794		5,794		4,915
With an allowance recorded	890		890		2,484
Total	6,684		6,684		7,399
Related Allowance	25		25		$ 815
Average Recorded Investment
With no related allowance recorded	4,924	4,715	4,775	4,518
With an allowance recorded	898	1,475	1,587	1,242
Total	5,822	6,190	6,362	5,760
Interest Income
With no related allowance recorded	25	59	44	95
With an allowance recorded	10	12	21	24
Total	35	71	65	119
Cash Basis Interest
With no related allowance recorded	20	25	34	25
With an allowance recorded	0	0	0	0
Total	$ 20	$ 25	$ 34	$ 25