LOANS HELD FOR INVESTMENT, Impaired Financing Receivables (Details) - USD ($) $ in Thousands	Jun. 30, 2021		Mar. 31, 2021	Dec. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Recorded Investment [Abstract]
Impaired loans with an allowance recorded	$ 4,798			$ 5,081
Impaired loans with no allowance recorded	6,680			7,418
Total loans individually evaluated for impairment	11,478			12,499
Loans collectively evaluated for impairment	856,712			815,481
Total loans held for investment	868,190			827,980
Unpaid Principal Balance [Abstract]
Impaired loans with an allowance recorded	4,798			5,081
Impaired loans with no allowance recorded	7,796			9,190
Total loans individually evaluated for impairment	12,594			14,271
Loans collectively evaluated for impairment	856,712			815,481
Total loans held for investment	869,306			829,752
Related Allowance for Credit Losses [Abstract]
Impaired loans with an allowance recorded	275			311
Impaired loans with no allowance recorded	0			0
Total loans individually evaluated for impairment	275			311
Loans collectively evaluated for impairment	9,965			9,883
Total loans held for investment	10,240		$ 10,233	10,194	$ 10,008	$ 9,167	$ 8,717
Impaired loans with a specific valuation allowance under ASC 310	4,798			5,081
Impaired loans without a specific valuation allowance under ASC 310	6,680			7,418
Total impaired loans	11,478			12,499
Valuation allowance related to impaired loans	275			311
Loans Guaranteed by Government Agencies [Member]
Related Allowance for Credit Losses [Abstract]
Total impaired loans	600			700
Manufactured Housing [Member]
Recorded Investment [Abstract]
Impaired loans with an allowance recorded	4,043			4,402
Impaired loans with no allowance recorded	1,286			2,294
Total loans individually evaluated for impairment	5,329			6,696
Loans collectively evaluated for impairment	281,223			273,588
Total loans held for investment	286,552			280,284
Unpaid Principal Balance [Abstract]
Impaired loans with an allowance recorded	4,043			4,402
Impaired loans with no allowance recorded	1,878			3,066
Total loans individually evaluated for impairment	5,921			7,468
Loans collectively evaluated for impairment	281,223			273,588
Total loans held for investment	287,144			281,056
Related Allowance for Credit Losses [Abstract]
Impaired loans with an allowance recorded	246			279
Impaired loans with no allowance recorded	0			0
Total loans individually evaluated for impairment	246			279
Loans collectively evaluated for impairment	2,384			2,333
Total loans held for investment	2,630		2,623	2,612	2,470	2,364	2,184
Impaired loans with a specific valuation allowance under ASC 310	4,043			4,402
Impaired loans without a specific valuation allowance under ASC 310	1,286			2,294
Total impaired loans	5,329			6,696
Valuation allowance related to impaired loans	246			279
Commercial Real Estate [Member]
Recorded Investment [Abstract]
Impaired loans with an allowance recorded	225			230
Impaired loans with no allowance recorded	1,386			1,468
Total loans individually evaluated for impairment	1,611			1,698
Loans collectively evaluated for impairment	442,516			400,450
Total loans held for investment	444,127			402,148
Unpaid Principal Balance [Abstract]
Impaired loans with an allowance recorded	225			230
Impaired loans with no allowance recorded	1,446			1,474
Total loans individually evaluated for impairment	1,671			1,704
Loans collectively evaluated for impairment	442,516			400,450
Total loans held for investment	444,187			402,154
Related Allowance for Credit Losses [Abstract]
Impaired loans with an allowance recorded	16			16
Impaired loans with no allowance recorded	0			0
Total loans individually evaluated for impairment	16			16
Loans collectively evaluated for impairment	6,312			5,934
Total loans held for investment	6,328		6,220	5,950	5,759	5,484	5,217
Impaired loans with a specific valuation allowance under ASC 310	225			230
Impaired loans without a specific valuation allowance under ASC 310	1,386			1,468
Valuation allowance related to impaired loans	16			16
Commercial [Member]
Recorded Investment [Abstract]
Impaired loans with an allowance recorded	93			0
Impaired loans with no allowance recorded	1,619			1,504
Total loans individually evaluated for impairment	1,712			1,504
Loans collectively evaluated for impairment	47,531			56,429
Total loans held for investment	49,243			57,933
Unpaid Principal Balance [Abstract]
Impaired loans with an allowance recorded	93			0
Impaired loans with no allowance recorded	1,619			1,844
Total loans individually evaluated for impairment	1,712			1,844
Loans collectively evaluated for impairment	47,531			56,429
Total loans held for investment	49,243			58,273
Related Allowance for Credit Losses [Abstract]
Impaired loans with an allowance recorded	0			0
Impaired loans with no allowance recorded	0			0
Total loans individually evaluated for impairment	0			0
Loans collectively evaluated for impairment	1,020			1,379
Total loans held for investment	1,020		1,108	1,379	1,503	1,164	1,162
Impaired loans with a specific valuation allowance under ASC 310	93			0
Impaired loans without a specific valuation allowance under ASC 310	1,619			1,504
Total impaired loans	1,712			1,504
Valuation allowance related to impaired loans	0			0
SBA [Member]
Recorded Investment [Abstract]
Impaired loans with an allowance recorded	0			0
Impaired loans with no allowance recorded	397			292
Total loans individually evaluated for impairment	397			292
Loans collectively evaluated for impairment	73,523			72,839
Total loans held for investment	73,920	[1]		73,131
Unpaid Principal Balance [Abstract]
Impaired loans with an allowance recorded	0			0
Impaired loans with no allowance recorded	854			946
Total loans individually evaluated for impairment	854			946
Loans collectively evaluated for impairment	73,523			72,839
Total loans held for investment	74,377			73,785
Related Allowance for Credit Losses [Abstract]
Impaired loans with an allowance recorded	0			0
Impaired loans with no allowance recorded	0			0
Total loans individually evaluated for impairment	0			0
Loans collectively evaluated for impairment	114			118
Total loans held for investment	114		130	118	128	29	32
Impaired loans with a specific valuation allowance under ASC 310	0			0
Impaired loans without a specific valuation allowance under ASC 310	397			292
Total impaired loans	397			292
Valuation allowance related to impaired loans	0			0
HELOC [Member]
Recorded Investment [Abstract]
Impaired loans with an allowance recorded	0			0
Impaired loans with no allowance recorded	0			0
Total loans individually evaluated for impairment	0			0
Loans collectively evaluated for impairment	3,685			3,861
Total loans held for investment	3,685			3,861
Unpaid Principal Balance [Abstract]
Impaired loans with an allowance recorded	0			0
Impaired loans with no allowance recorded	0			0
Total loans individually evaluated for impairment	0			0
Loans collectively evaluated for impairment	3,685			3,861
Total loans held for investment	3,685			3,861
Related Allowance for Credit Losses [Abstract]
Impaired loans with an allowance recorded	0			0
Impaired loans with no allowance recorded	0			0
Total loans individually evaluated for impairment	0			0
Loans collectively evaluated for impairment	25			25
Total loans held for investment	25		25	25	26	27	27
Impaired loans with a specific valuation allowance under ASC 310	0			0
Impaired loans without a specific valuation allowance under ASC 310	0			0
Total impaired loans	0			0
Valuation allowance related to impaired loans	0			0
Single Family Real Estate [Member]
Recorded Investment [Abstract]
Impaired loans with an allowance recorded	437			449
Impaired loans with no allowance recorded	1,992			1,860
Total loans individually evaluated for impairment	2,429			2,309
Loans collectively evaluated for impairment	8,194			8,181
Total loans held for investment	10,623			10,490
Unpaid Principal Balance [Abstract]
Impaired loans with an allowance recorded	437			449
Impaired loans with no allowance recorded	1,999			1,860
Total loans individually evaluated for impairment	2,436			2,309
Loans collectively evaluated for impairment	8,194			8,181
Total loans held for investment	10,630			10,490
Related Allowance for Credit Losses [Abstract]
Impaired loans with an allowance recorded	13			16
Impaired loans with no allowance recorded	0			0
Total loans individually evaluated for impairment	13			16
Loans collectively evaluated for impairment	109			92
Total loans held for investment	122		126	108	120	96	92
Impaired loans with a specific valuation allowance under ASC 310	437			449
Impaired loans without a specific valuation allowance under ASC 310	1,992			1,860
Total impaired loans	2,429			2,309
Valuation allowance related to impaired loans	13			16
Consumer [Member]
Recorded Investment [Abstract]
Impaired loans with an allowance recorded	0			0
Impaired loans with no allowance recorded	0			0
Total loans individually evaluated for impairment	0			0
Loans collectively evaluated for impairment	40			133
Total loans held for investment	40			133
Unpaid Principal Balance [Abstract]
Impaired loans with an allowance recorded	0			0
Impaired loans with no allowance recorded	0			0
Total loans individually evaluated for impairment	0			0
Loans collectively evaluated for impairment	40			133
Total loans held for investment	40			133
Related Allowance for Credit Losses [Abstract]
Impaired loans with an allowance recorded	0			0
Impaired loans with no allowance recorded	0			0
Total loans individually evaluated for impairment	0			0
Loans collectively evaluated for impairment	1			2
Total loans held for investment	1		$ 1	2	$ 2	$ 3	$ 3
Impaired loans with a specific valuation allowance under ASC 310	0			0
Impaired loans without a specific valuation allowance under ASC 310	0			0
Total impaired loans	0			0
Valuation allowance related to impaired loans	$ 0			$ 0

[1] Includes $71.1 million and $69.5 million of SBA Paycheck Protection Program (PPP) loans as of June 30, 2021 and December 31, 2020, respectively.