4. Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2016	Dec. 31, 2015
Beginning Balance	$ 8,068	$ 8,870	$ 8,781	$ 8,725
Charge-offs	691	171	1,698	601
Recoveries	194	82	488	357
Provision				300
Ending Balance	7,571	8,781	7,571	8,781
Individually Evaluated for Impairment	2,132	2,915	2,132	2,915
Collectively Evaluated for Impairment	5,439	5,866	5,439	5,866
Construction/Land Development [Member]
Beginning Balance	3,382	5,154	4,442	4,738
Charge-offs		18	294	156
Recoveries	2	2	4	85
Provision	(101)	(696)	(869)	(225)
Ending Balance	3,283	4,442	3,283	4,442
Individually Evaluated for Impairment	1,601	2,373	1,601	2,373
Collectively Evaluated for Impairment	1,682	2,069	1,682	2,069
Farmland [Member]
Beginning Balance	38	87	95
Charge-offs
Recoveries
Provision	(2)	8	(59)	95
Ending Balance	36	95	36	95
Individually Evaluated for Impairment
Collectively Evaluated for Impairment	36	95	36	95
Real Estate [Member]
Beginning Balance	1,031	486	806	623
Charge-offs			23	25
Recoveries		37	4	37
Provision	(36)	283	208	171
Ending Balance	995	806	995	806
Individually Evaluated for Impairment	219	238	219	238
Collectively Evaluated for Impairment	776	568	776	568
Multi-Family [Member]
Beginning Balance	24	82	71
Charge-offs
Recoveries
Provision		(11)	(47)	71
Ending Balance	24	71	24	71
Individually Evaluated for Impairment
Collectively Evaluated for Impairment	24	71	24	71
Commercial Real Estate [Member]
Beginning Balance	704	95	445	126
Charge-offs			18
Recoveries	27	17	114	65
Provision	(11)	333	179	254
Ending Balance	720	445	720	445
Individually Evaluated for Impairment	53	18	53	18
Collectively Evaluated for Impairment	667	427	667	427
Home Equity - Closed End [Member]
Beginning Balance	167	160	174	188
Charge-offs	5	1	6	26
Recoveries				6
Provision	(72)	15	(78)	6
Ending Balance	90	174	90	174
Individually Evaluated for Impairment
Collectively Evaluated for Impairment	90	174	90	174
Home Equity [Member]
Beginning Balance	963	185	634	154
Charge-offs	347		348	51
Recoveries	36		106
Provision	48	449	308	531
Ending Balance	700	634	700	634
Individually Evaluated for Impairment	241	269	241	269
Collectively Evaluated for Impairment	459	365	459	365
Commercial & Industrial - Non-Real Estate [Member]
Beginning Balance	793	828	1,055	1,211
Charge-offs	63		293
Recoveries		2	39	62
Provision	(73)	225	(144)	(218)
Ending Balance	657	1,055	657	1,055
Individually Evaluated for Impairment
Collectively Evaluated for Impairment	657	1,055	657	1,055
Consumer [Member]
Beginning Balance	130	205	108	214
Charge-offs	12	8	35	32
Recoveries	2	11	13	32
Provision	(18)	(100)	16	(106)
Ending Balance	102	108	102	108
Individually Evaluated for Impairment
Collectively Evaluated for Impairment	102	108	102	108
Dealer Finance [Member]
Beginning Balance	764	1,477	836	1,336
Charge-offs	232	140	618	251
Recoveries	107	4	164	24
Provision	253	(505)	510	(273)
Ending Balance	892	836	892	836
Individually Evaluated for Impairment	18	17	18	17
Collectively Evaluated for Impairment	874	819	874	819
Credit Cards [Member]
Beginning Balance	72	111	115	135
Charge-offs	32	4	63	60
Recoveries	20	9	44	46
Provision	12	(1)	(24)	(6)
Ending Balance	72	115	72	115
Individually Evaluated for Impairment
Collectively Evaluated for Impairment	$ 72	$ 115	$ 72	$ 115