3. Loans, Allowance for Loan Losses (Details) (USD $) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Allowance for loan losses
Beginning balance	$ 6,366	$ 7,550	$ 9,589
Charge-offs	(1,133)	(982)	(1,238)
Recoveries	422	305	405
Provision	790	(507)	(1,206)
Ending balance	6,445	6,366	7,550
Ending balance: individually evaluated for impairments	1,038	1,130	1,319
Ending balance: collectively evaluated for impairments	5,407	5,236	6,231
Ending balance	6,445	6,366	7,550
Loans
Ending balance	804,023	759,764	723,811
Ending balance: individually evaluated for impairment	17,947	19,764	21,301
Ending balance: collectively evaluated for impairment	786,076	740,000	702,510
Construction and land development
Allowance for loan losses
Beginning balance	804	1,152	2,185
Charge-offs	(53)	0	(7)
Recoveries	10	14	10
Provision	52	(362)	(1,036)
Ending balance	813	804	1,152
Ending balance: individually evaluated for impairments	0	0	0
Ending balance: collectively evaluated for impairments	813	804	1,152
Ending balance	813	804	1,152
Loans
Ending balance	94,178	84,987	61,749
Ending balance: individually evaluated for impairment	96	98	0
Ending balance: collectively evaluated for impairment	94,082	84,889	61,749
Single-family residential
Allowance for loan losses
Beginning balance	1,812	2,126	2,534
Charge-offs	(116)	(249)	(275)
Recoveries	106	85	55
Provision	(477)	(150)	(188)
Ending balance	1,325	1,812	2,126
Ending balance: individually evaluated for impairments	0	0	0
Ending balance: collectively evaluated for impairments	1,325	1,812	2,126
Ending balance	1,325	1,812	2,126
Loans
Ending balance	252,983	246,703	240,700
Ending balance: individually evaluated for impairment	1,779	1,855	935
Ending balance: collectively evaluated for impairment	251,204	244,848	239,765
Single-family residential - Banco de la Gente Non-traditional
Allowance for loan losses
Beginning balance	1,280	1,377	1,460
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	(103)	(97)	(83)
Ending balance	1,177	1,280	1,377
Ending balance: individually evaluated for impairments	1,023	1,093	1,160
Ending balance: collectively evaluated for impairments	154	187	217
Ending balance	1,177	1,280	1,377
Loans
Ending balance	34,261	37,249	40,189
Ending balance: individually evaluated for impairment	14,310	15,460	16,718
Ending balance: collectively evaluated for impairment	19,951	21,789	23,471
Commercial
Allowance for loan losses
Beginning balance	1,193	1,593	1,917
Charge-offs	(453)	0	(318)
Recoveries	105	21	19
Provision	433	(421)	(25)
Ending balance	1,278	1,193	1,593
Ending balance: individually evaluated for impairments	15	37	159
Ending balance: collectively evaluated for impairments	1,263	1,156	1,434
Ending balance	1,278	1,193	1,593
Loans
Ending balance	270,055	248,637	247,521
Ending balance: individually evaluated for impairment	1,673	2,251	3,648
Ending balance: collectively evaluated for impairment	268,382	246,386	243,873
Multifamily and Farmland
Allowance for loan losses
Beginning balance	72	52	0
Charge-offs	(5)	(66)	0
Recoveries	1	0	0
Provision	15	86	52
Ending balance	83	72	52
Ending balance: individually evaluated for impairments	0	0	0
Ending balance: collectively evaluated for impairments	83	72	52
Ending balance	83	72	52
Loans
Ending balance	33,163	28,937	21,047
Ending balance: individually evaluated for impairment	0	0	0
Ending balance: collectively evaluated for impairment	33,163	28,937	21,047
Commercial loans (not secured by real estate)
Allowance for loan losses
Beginning balance	574	675	842
Charge-offs	(54)	(194)	(146)
Recoveries	32	31	170
Provision	74	62	(191)
Ending balance	626	574	675
Ending balance: individually evaluated for impairments	0	0	0
Ending balance: collectively evaluated for impairments	626	574	675
Ending balance	626	574	675
Loans
Ending balance	97,465	89,022	87,596
Ending balance: individually evaluated for impairment	89	100	0
Ending balance: collectively evaluated for impairment	97,376	88,922	87,596
Farm loans (not secured by real estate)
Allowance for loan losses
Beginning balance	0	0	0
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	0	0	0
Ending balance	0	0	0
Ending balance: individually evaluated for impairments	0	0	0
Ending balance: collectively evaluated for impairments	0	0	0
Ending balance	0	0	0
Loans
Ending balance	926	1,204	0
Ending balance: individually evaluated for impairment	0	0	0
Ending balance: collectively evaluated for impairment	926	1,204	0
Consumer And All Other Loans
Allowance for loan losses
Beginning balance	155	204	172
Charge-offs	(452)	(473)	(492)
Recoveries	168	154	151
Provision	290	270	373
Ending balance	161	155	204
Ending balance: individually evaluated for impairments	0	0	0
Ending balance: collectively evaluated for impairments	161	155	204
Ending balance	161	155	204
Loans
Ending balance	20,992	23,025	25,009
Ending balance: individually evaluated for impairment	0	0	0
Ending balance: collectively evaluated for impairment	20,992	23,025	25,009
Unallocated
Allowance for loan losses
Beginning balance	476	371	479
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	506	105	(108)
Ending balance	982	476	371
Ending balance: individually evaluated for impairments	0	0	0
Ending balance: collectively evaluated for impairments	982	476	371
Ending balance	982	476	371
Loans
Ending balance	0	0	0
Ending balance: individually evaluated for impairment	0	0	0
Ending balance: collectively evaluated for impairment	$ 0	$ 0	$ 0

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Loans Receivable [Abstract]

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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