Loans Receivable Held for Investment, Allowance for Loan Losses and Recorded Investment in Loans by Type of Loans and Based on Impairment Method (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Ending Allowance Balance Attributable to Loans [Abstract]
Individually evaluated for impairment	$ 7		$ 7
Collectively evaluated for impairment	2,955		3,384
Total ending allowance balance	2,962	$ 3,539	3,391	$ 3,296	$ 3,215	$ 3,215
Loans [Abstract]
Loans individually evaluated for impairment	2,197		2,301
Loans collectively evaluated for impairment	500,837		447,692
Subtotal	503,034		449,993
Loans acquired in the merger	147,648		203,753
Gross loans receivable	650,682		653,746
Real Estate [Member] | Single Family [Member]
Ending Allowance Balance Attributable to Loans [Abstract]
Individually evaluated for impairment	3		3
Collectively evaluated for impairment	117		142
Total ending allowance balance	120	157	145	170	275	296
Loans [Abstract]
Loans individually evaluated for impairment	62		65
Loans collectively evaluated for impairment	22,849		32,599
Subtotal	22,911		32,664
Loans acquired in the merger	9,732		12,708
Gross loans receivable	32,643		45,372
Real Estate [Member] | Multi-Family [Member]
Ending Allowance Balance Attributable to Loans [Abstract]
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	2,278		2,657
Total ending allowance balance	2,278	2,771	2,657	2,606	2,473	2,433
Loans [Abstract]
Loans individually evaluated for impairment	271		282
Loans collectively evaluated for impairment	375,409		353,179
Subtotal	375,680		353,461
Loans acquired in the merger	31,556		41,769
Gross loans receivable	407,236		395,230
Real Estate [Member] | Commercial Real Estate [Member]
Ending Allowance Balance Attributable to Loans [Abstract]
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	153		236
Total ending allowance balance	153	217	236	227	219	222
Loans [Abstract]
Loans individually evaluated for impairment	0		0
Loans collectively evaluated for impairment	18,748		25,507
Subtotal	18,748		25,507
Loans acquired in the merger	66,360		67,686
Gross loans receivable	85,108		93,193
Real Estate [Member] | Church [Member]
Ending Allowance Balance Attributable to Loans [Abstract]
Individually evaluated for impairment	4		4
Collectively evaluated for impairment	44		99
Total ending allowance balance	48	63	103	208	221	237
Loans [Abstract]
Loans individually evaluated for impairment	1,864		1,954
Loans collectively evaluated for impairment	9,713		9,058
Subtotal	11,577		11,012
Loans acquired in the merger	9,000		11,491
Gross loans receivable	20,577		22,503
Real Estate [Member] | Construction [Member]
Ending Allowance Balance Attributable to Loans [Abstract]
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	221		212
Total ending allowance balance	221	236	212	81	22	22
Loans [Abstract]
Loans individually evaluated for impairment	0		0
Loans collectively evaluated for impairment	30,762		24,225
Subtotal	30,762		24,225
Loans acquired in the merger	5,264		7,847
Gross loans receivable	36,026		32,072
Commercial - Other [Member]
Ending Allowance Balance Attributable to Loans [Abstract]
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	138		23
Total ending allowance balance	138	95	23	4	5	4
Loans [Abstract]
Loans individually evaluated for impairment	0		0
Loans collectively evaluated for impairment	43,305		3,124
Subtotal	43,305		3,124
Loans acquired in the merger	25,736		43,415
Gross loans receivable	69,041		46,539
Consumer [Member]
Ending Allowance Balance Attributable to Loans [Abstract]
Individually evaluated for impairment	0
Collectively evaluated for impairment	4
Total ending allowance balance	4	$ 0	15	$ 0	$ 0	$ 1
Loans [Abstract]
Loans individually evaluated for impairment	0
Loans collectively evaluated for impairment	51
Subtotal	51
Loans acquired in the merger	0
Gross loans receivable	51		18,837
SBA Loans [Member]
Ending Allowance Balance Attributable to Loans [Abstract]
Individually evaluated for impairment			0
Collectively evaluated for impairment			15
Total ending allowance balance			15
Loans [Abstract]
Loans individually evaluated for impairment			0
Loans collectively evaluated for impairment			0
Subtotal			0
Loans acquired in the merger			18,837
Gross loans receivable	$ 4,451		$ 18,837