3. Loans, Allowance for Loan Losses (Details) (USD $) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for loan losses
Beginning balance	$ 11,082	$ 13,501	$ 14,423
Charge-offs	(1,844)	(2,637)	(4,372)
Recoveries	368	917	866
Provision	(17)	(699)	2,584
Ending balance	9,589	11,082	13,501
Ending balance: individually evaluated for impairments	1,382	1,497	1,478
Ending balance: collectively evaluated for impairments	8,207	9,585	12,023
Ending balance	9,589	11,082	13,501
Loans
Ending balance	689,091	651,891	620,960
Ending balance: individually evaluated for impairment	24,914	28,166	33,666
Ending balance: collectively evaluated for impairment	664,177	623,725	587,294
Construction and land development
Allowance for loan losses
Beginning balance	2,785	3,218	4,399
Charge-offs	(198)	(884)	(777)
Recoveries	45	428	377
Provision	(447)	23	(781)
Ending balance	2,185	2,785	3,218
Ending balance: individually evaluated for impairments	0	0	0
Ending balance: collectively evaluated for impairments	2,185	2,785	3,218
Ending balance	2,185	2,785	3,218
Loans
Ending balance	65,791	57,617	63,742
Ending balance: individually evaluated for impairment	216	3,639	6,293
Ending balance: collectively evaluated for impairment	65,575	53,978	57,449
Single-family residential
Allowance for loan losses
Beginning balance	2,566	3,123	3,231
Charge-offs	(618)	(309)	(1,724)
Recoveries	34	72	111
Provision	552	(320)	1,505
Ending balance	2,534	2,566	3,123
Ending balance: individually evaluated for impairments	96	82	39
Ending balance: collectively evaluated for impairments	2,438	2,484	3,084
Ending balance	2,534	2,566	3,123
Loans
Ending balance	220,690	206,417	195,975
Ending balance: individually evaluated for impairment	2,636	2,298	3,127
Ending balance: collectively evaluated for impairment	218,054	204,119	192,848
Single-family residential - Banco de la Gente stated income
Allowance for loan losses
Beginning balance	1,610	1,863	1,998
Charge-offs	(117)	(190)	(272)
Recoveries	22	16	141
Provision	(55)	(79)	(4)
Ending balance	1,460	1,610	1,863
Ending balance: individually evaluated for impairments	1,115	1,155	1,268
Ending balance: collectively evaluated for impairments	345	455	595
Ending balance	1,460	1,610	1,863
Loans
Ending balance	43,733	47,015	49,463
Ending balance: individually evaluated for impairment	17,850	18,884	19,958
Ending balance: collectively evaluated for impairment	25,883	28,131	29,505
Commercial
Allowance for loan losses
Beginning balance	1,902	2,219	2,049
Charge-offs	(329)	(290)	(445)
Recoveries	21	171	50
Provision	323	(198)	565
Ending balance	1,917	1,902	2,219
Ending balance: individually evaluated for impairments	171	260	171
Ending balance: collectively evaluated for impairments	1,746	1,642	2,048
Ending balance	1,917	1,902	2,219
Loans
Ending balance	228,526	228,558	209,287
Ending balance: individually evaluated for impairment	4,212	3,345	3,767
Ending balance: collectively evaluated for impairment	224,314	225,213	205,520
Multifamily and Farmland
Allowance for loan losses
Beginning balance	7	37	28
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	(7)	(30)	9
Ending balance	0	7	37
Ending balance: individually evaluated for impairments	0	0	0
Ending balance: collectively evaluated for impairments	0	7	37
Ending balance	0	7	37
Loans
Ending balance	18,080	12,400	11,801
Ending balance: individually evaluated for impairment	0	0	0
Ending balance: collectively evaluated for impairment	18,080	12,400	11,801
Commercial loans (not secured by real estate)
Allowance for loan losses
Beginning balance	1,098	1,069	1,088
Charge-offs	(37)	(430)	(502)
Recoveries	101	54	44
Provision	(320)	405	439
Ending balance	842	1,098	1,069
Ending balance: individually evaluated for impairments	0	0	0
Ending balance: collectively evaluated for impairments	842	1,098	1,069
Ending balance	842	1,098	1,069
Loans
Ending balance	91,010	76,262	68,047
Ending balance: individually evaluated for impairment	0	0	256
Ending balance: collectively evaluated for impairment	91,010	76,262	67,791
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	3	7	19
Ending balance: individually evaluated for impairment	0	0	0
Ending balance: collectively evaluated for impairment	3	7	19
Consumer And All Other Loans
Allowance for loan losses
Beginning balance	233	245	245
Charge-offs	(545)	(534)	(652)
Recoveries	145	176	143
Provision	339	346	509
Ending balance	172	233	245
Ending balance: individually evaluated for impairments	0	0	0
Ending balance: collectively evaluated for impairments	172	233	245
Ending balance	172	233	245
Loans
Ending balance	21,258	23,615	22,626
Ending balance: individually evaluated for impairment	0	0	265
Ending balance: collectively evaluated for impairment	21,258	23,615	22,361
Unallocated
Allowance for loan losses
Beginning balance	881	1,727	1,385
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	(402)	(846)	342
Ending balance	479	881	1,727
Ending balance: individually evaluated for impairments	0	0	0
Ending balance: collectively evaluated for impairments	479	881	1,727
Ending balance	479	881	1,727
Loans
Ending balance	0	0	0
Ending balance: individually evaluated for impairment	0	0	0
Ending balance: collectively evaluated for impairment	$ 0	$ 0	$ 0

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 valuation allowance for financing receivables that are expected to be uncollectible that were individually 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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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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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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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The allowance for other loan and lease losses represents the reserve to cover probable credit losses related to specifically identified other loans and leases, as well as probable credit losses inherent in the remainder of the other loan portfolio as of the balance sheet date. For banks, include currently required allocated transfer risk reserves. Include carryover of or adjustments to the allowance for other loan losses in connection with business combinations determined to be appropriate.

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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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