Note 4 - Loans and Allowance for Loan Losses - Loan Portfolio By Reporting Segment and Portfolio Segment (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Total loans	$ 334,781	$ 268,577
Less: Unearned interest, fees and deferred cost	7,153	9,364
Allowance for loan losses	4,856	3,781
Net loans	322,772	255,432
FUSB [Member]
Total loans	239,869	175,213
Less: Unearned interest, fees and deferred cost	218	149
Allowance for loan losses	2,409	1,329	$ 3,486
Net loans	237,242	173,735
ALC [Member]
Total loans	94,912	93,364
Less: Unearned interest, fees and deferred cost	6,935	9,215
Allowance for loan losses	2,447	2,452	2,682
Net loans	85,530	81,697
Real Estate [Member] \| Construction, Land Development and Other Land Loans [Member]
Total loans	23,772	11,827
Real Estate [Member] \| Construction, Land Development and Other Land Loans [Member] \| FUSB [Member]
Total loans	23,772	11,827
Allowance for loan losses	535	110	10
Real Estate [Member] \| Construction, Land Development and Other Land Loans [Member] \| ALC [Member]
Total loans
Allowance for loan losses
Real Estate [Member] \| Secured by 1-4 Family Residential Properties [Member]
Total loans	46,679	47,963
Real Estate [Member] \| Secured by 1-4 Family Residential Properties [Member] \| FUSB [Member]
Total loans	32,955	30,730
Allowance for loan losses	304	138	437
Real Estate [Member] \| Secured by 1-4 Family Residential Properties [Member] \| ALC [Member]
Total loans	13,724	17,233
Allowance for loan losses	107	250	346
Real Estate [Member] \| Secured by Multi-family Residential Properties [Member]
Total loans	16,627	11,845
Real Estate [Member] \| Secured by Multi-family Residential Properties [Member] \| FUSB [Member]
Total loans	16,627	11,845
Allowance for loan losses	88	29	1,460
Real Estate [Member] \| Secured by Multi-family Residential Properties [Member] \| ALC [Member]
Total loans
Allowance for loan losses
Real Estate [Member] \| Secured by Non-farm, Non-residential Properties [Member]
Total loans	102,112	83,883
Real Estate [Member] \| Secured by Non-farm, Non-residential Properties [Member] \| FUSB [Member]
Total loans	102,112	83,883
Allowance for loan losses	903	351	1,323
Real Estate [Member] \| Secured by Non-farm, Non-residential Properties [Member] \| ALC [Member]
Total loans
Allowance for loan losses
Real Estate [Member] \| Other Real Estate Loans [Member]
Total loans	234	115
Real Estate [Member] \| Other Real Estate Loans [Member] \| FUSB [Member]
Total loans	234	115
Allowance for loan losses	2	1	1
Real Estate [Member] \| Other Real Estate Loans [Member] \| ALC [Member]
Total loans
Allowance for loan losses
Commercial and Industrial Loans [Member]
Total loans	57,963	29,377
Commercial and Industrial Loans [Member] \| FUSB [Member]
Total loans	57,963	29,377
Allowance for loan losses	527	659	141
Commercial and Industrial Loans [Member] \| ALC [Member]
Total loans
Allowance for loan losses
Consumer Portfolio Segment [Member] \| FUSB [Member]
Total loans	6,206	7,436
Consumer Portfolio Segment [Member] \| Consumer Loans[Member]
Total loans	42,619	45,634
Consumer Portfolio Segment [Member] \| Consumer Loans[Member] \| FUSB [Member]
Total loans	6,206	7,436
Allowance for loan losses	50	41	114
Consumer Portfolio Segment [Member] \| Consumer Loans[Member] \| ALC [Member]
Total loans	36,413	38,198
Allowance for loan losses	1,717	1,584	1,962
Consumer Portfolio Segment [Member] \| Indirect Sales [Member]
Total loans	44,775	37,933
Consumer Portfolio Segment [Member] \| Indirect Sales [Member] \| FUSB [Member]
Total loans
Allowance for loan losses
Consumer Portfolio Segment [Member] \| Indirect Sales [Member] \| ALC [Member]
Total loans	44,775	37,933
Allowance for loan losses	$ 623	$ 618	$ 374

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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