3. Loans, Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Allowance for loan losses
Beginning balance	$ 7,263	$ 9,116	$ 7,550	$ 9,589
Charge-offs	(198)	(186)	(329)	(508)
Recoveries	53	141	133	207
Provision	49	(531)	(187)	(748)
Ending balance	7,167	8,540	7,167	8,540
Ending balance: individually evaluated for impairments	1,195	1,363	1,195	1,363
Ending balance: collectively evaluated for impairments	5,972	7,177	5,972	7,177
Ending balance	7,167	8,540	7,167	8,540
Loans
Ending balance	745,038	702,031	745,038	702,031
Ending balance: individually evaluated for impairment	21,898	23,262	21,898	23,262
Ending balance: collectively evaluated for impairment	723,140	678,769	723,140	678,769
Construction and land development
Allowance for loan losses
Beginning balance	969	1,844	1,152	2,185
Charge-offs	0	0	0	0
Recoveries	3	3	10	6
Provision	211	(265)	21	(609)
Ending balance	1,183	1,582	1,183	1,582
Ending balance: individually evaluated for impairments	0	0	0	0
Ending balance: collectively evaluated for impairments	1,183	1,582	1,183	1,582
Ending balance	1,183	1,582	1,183	1,582
Loans
Ending balance	71,213	60,075	71,213	60,075
Ending balance: individually evaluated for impairment	0	0	0	0
Ending balance: collectively evaluated for impairment	71,213	60,075	71,213	60,075
Single-family residential
Allowance for loan losses
Beginning balance	2,003	2,475	2,126	2,534
Charge-offs	(24)	(64)	(44)	(123)
Recoveries	9	5	16	13
Provision	(169)	(183)	(279)	(191)
Ending balance	1,819	2,233	1,819	2,233
Ending balance: individually evaluated for impairments	0	94	0	94
Ending balance: collectively evaluated for impairments	1,819	2,139	1,819	2,139
Ending balance	1,819	2,233	1,819	2,233
Loans
Ending balance	240,993	229,586	240,993	229,586
Ending balance: individually evaluated for impairment	1,152	1,116	1,152	1,116
Ending balance: collectively evaluated for impairment	239,841	228,470	239,841	228,470
Single-family residential - Banco de la Gente stated income
Allowance for loan losses
Beginning balance	1,328	1,423	1,377	1,460
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	(35)	(69)	(84)	(106)
Ending balance	1,293	1,354	1,293	1,354
Ending balance: individually evaluated for impairments	1,103	1,092	1,103	1,092
Ending balance: collectively evaluated for impairments	190	262	190	262
Ending balance	1,293	1,354	1,293	1,354
Loans
Ending balance	38,875	41,910	38,875	41,910
Ending balance: individually evaluated for impairment	16,792	17,430	16,792	17,430
Ending balance: collectively evaluated for impairment	22,083	24,480	22,083	24,480
Commercial
Allowance for loan losses
Beginning balance	1,655	1,788	1,593	1,917
Charge-offs	0	0	(66)	(106)
Recoveries	6	6	14	11
Provision	(198)	(144)	(78)	(172)
Ending balance	1,463	1,650	1,463	1,650
Ending balance: individually evaluated for impairments	65	177	65	177
Ending balance: collectively evaluated for impairments	1,398	1,473	1,398	1,473
Ending balance	1,463	1,650	1,463	1,650
Loans
Ending balance	243,957	232,035	243,957	232,035
Ending balance: individually evaluated for impairment	3,724	4,716	3,724	4,716
Ending balance: collectively evaluated for impairment	240,233	227,319	240,233	227,319
Multifamily and Farmland
Allowance for loan losses
Beginning balance	73	0	52	0
Charge-offs	(66)	0	0	0
Recoveries	0	0	0	0
Provision	68	46	23	46
Ending balance	75	46	75	46
Ending balance: individually evaluated for impairments	0	0	0	0
Ending balance: collectively evaluated for impairments	75	46	75	46
Ending balance	75	46	75	46
Loans
Ending balance	30,125	18,688	30,125	18,688
Ending balance: individually evaluated for impairment	0	0	0	0
Ending balance: collectively evaluated for impairment	30,125	18,688	30,125	18,688
Commercial loans (not secured by real estate)
Allowance for loan losses
Beginning balance	628	810	675	842
Charge-offs	(35)	(10)	(37)	(39)
Recoveries	7	99	15	105
Provision	104	(96)	51	(105)
Ending balance	704	803	704	803
Ending balance: individually evaluated for impairments	27	0	27	0
Ending balance: collectively evaluated for impairments	677	803	677	803
Ending balance	704	803	704	803
Loans
Ending balance	94,567	91,347	94,567	91,347
Ending balance: individually evaluated for impairment	230	0	230	0
Ending balance: collectively evaluated for impairment	94,337	91,347	94,337	91,347
Farm loans (not secured by real estate)
Allowance for loan losses
Beginning balance	0	0	0	0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	0	0	0	0
Ending balance	0	0	0	0
Ending balance: individually evaluated for impairments	0	0	0	0
Ending balance: collectively evaluated for impairments	0	0	0	0
Ending balance	0	0	0	0
Loans
Ending balance	1,591	1	1,591	1
Ending balance: individually evaluated for impairment	0	0	0	0
Ending balance: collectively evaluated for impairment	1,591	1	1,591	1
Consumer And All Other Loans
Allowance for loan losses
Beginning balance	178	190	204	172
Charge-offs	(73)	(112)	(182)	(240)
Recoveries	28	28	78	72
Provision	25	128	58	230
Ending balance	158	234	158	234
Ending balance: individually evaluated for impairments	0	0	0	0
Ending balance: collectively evaluated for impairments	158	234	158	234
Ending balance	158	234	158	234
Loans
Ending balance	23,717	28,389	23,717	28,389
Ending balance: individually evaluated for impairment	0	0	0	0
Ending balance: collectively evaluated for impairment	23,717	28,389	23,717	28,389
Unallocated
Allowance for loan losses
Beginning balance	429	586	371	479
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	43	52	101	159
Ending balance	472	638	472	638
Ending balance: individually evaluated for impairments	0	0	0	0
Ending balance: collectively evaluated for impairments	472	638	472	638
Ending balance	472	638	472	638
Loans
Ending balance	0	0	0	0
Ending balance: individually evaluated for impairment	0	0	0	0
Ending balance: collectively evaluated for impairment	$ 0	$ 0	$ 0	$ 0

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Loans Receivable [Abstract]

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- Definition

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

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The balance of financing receivables that were collectively evaluated for impairment.

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- Definition

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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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