3. Loans, Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Allowance for loan losses
Beginning balance	$ 6,366	$ 7,550
Charge-offs	(106)	(131)
Recoveries	82	80
Provision	31	(236)
Ending balance	6,373	7,263
Ending balance: individually evaluated for impairments	1,091	1,182
Ending balance: collectively evaluated for impairments	5,282	6,081
Ending balance	6,373	7,263
Loans
Ending balance	765,824	735,861
Ending balance: individually evaluated for impairment	19,130	20,669
Ending balance: collectively evaluated for impairment	746,694	715,192
Construction and land development
Allowance for loan losses
Beginning balance	804	1,152
Charge-offs	0	0
Recoveries	1	8
Provision	(154)	(191)
Ending balance	651	969
Ending balance: individually evaluated for impairments	0	0
Ending balance: collectively evaluated for impairments	651	969
Ending balance	651	969
Loans
Ending balance	82,046	65,438
Ending balance: individually evaluated for impairment	96	0
Ending balance: collectively evaluated for impairment	81,950	65,438
Single-family residential
Allowance for loan losses
Beginning balance	1,812	2,126
Charge-offs	0	(20)
Recoveries	5	7
Provision	(177)	(110)
Ending balance	1,640	2,003
Ending balance: individually evaluated for impairments	0	0
Ending balance: collectively evaluated for impairments	1,640	2,003
Ending balance	1,640	2,003
Loans
Ending balance	244,061	239,322
Ending balance: individually evaluated for impairment	1,832	1,630
Ending balance: collectively evaluated for impairment	242,229	237,692
Single-family residential - Banco de la Gente stated income
Allowance for loan losses
Beginning balance	1,280	1,377
Charge-offs	0	0
Recoveries	0	0
Provision	(15)	(49)
Ending balance	1,265	1,328
Ending balance: individually evaluated for impairments	1,079	1,120
Ending balance: collectively evaluated for impairments	186	208
Ending balance	1,265	1,328
Loans
Ending balance	36,540	39,230
Ending balance: individually evaluated for impairment	15,190	16,303
Ending balance: collectively evaluated for impairment	21,350	22,927
Commercial
Allowance for loan losses
Beginning balance	1,193	1,593
Charge-offs	0	0
Recoveries	4	7
Provision	101	55
Ending balance	1,298	1,655
Ending balance: individually evaluated for impairments	12	62
Ending balance: collectively evaluated for impairments	1,286	1,593
Ending balance	1,298	1,655
Loans
Ending balance	261,636	247,940
Ending balance: individually evaluated for impairment	1,915	2,736
Ending balance: collectively evaluated for impairment	259,721	245,204
Multifamily and Farmland
Allowance for loan losses
Beginning balance	72	52
Charge-offs	(5)	0
Recoveries	1	0
Provision	5	21
Ending balance	73	73
Ending balance: individually evaluated for impairments	0	0
Ending balance: collectively evaluated for impairments	73	73
Ending balance	73	73
Loans
Ending balance	29,108	29,078
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	29,108	29,078
Commercial loans (not secured by real estate)
Allowance for loan losses
Beginning balance	574	675
Charge-offs	0	(2)
Recoveries	8	8
Provision	124	(53)
Ending balance	706	628
Ending balance: individually evaluated for impairments	0	0
Ending balance: collectively evaluated for impairments	706	628
Ending balance	706	628
Loans
Ending balance	89,304	90,923
Ending balance: individually evaluated for impairment	97	0
Ending balance: collectively evaluated for impairment	89,207	90,923
Farm loans (not secured by real estate)
Allowance for loan losses
Beginning balance	0	0
Charge-offs	0	0
Recoveries	0	0
Provision	0	0
Ending balance	0	0
Ending balance: individually evaluated for impairments	0	0
Ending balance: collectively evaluated for impairments	0	0
Ending balance	0	0
Loans
Ending balance	1,095	897
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	1,095	897
Consumer And All Other Loans
Allowance for loan losses
Beginning balance	155	204
Charge-offs	(101)	(109)
Recoveries	63	50
Provision	19	33
Ending balance	136	178
Ending balance: individually evaluated for impairments	0	0
Ending balance: collectively evaluated for impairments	136	178
Ending balance	136	178
Loans
Ending balance	22,034	23,033
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	22,034	23,033
Unallocated
Allowance for loan losses
Beginning balance	476	371
Charge-offs	0	0
Recoveries	0	0
Provision	128	58
Ending balance	604	429
Ending balance: individually evaluated for impairments	0	0
Ending balance: collectively evaluated for impairments	604	429
Ending balance	604	429
Loans
Ending balance		0
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	$ 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 recovery of financing receivables doubtful of collection that were previously charged off.

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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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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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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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