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Note 4 - Loans and Allowance for Loan Losses - Changes in Allowance for Loan Losses and Recorded Investment in Loans (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Beginning balance	$ 4,856
Provision for loan losses	515	$ 167
Ending balance	4,879		$ 4,856
Total loans receivable	328,767		334,781
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Total loans receivable	25,853		23,772
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Total loans receivable	45,528		46,679
Real Estate [Member] | Secured by Multi-family Residential Properties [Member]
Total loans receivable	16,464		16,627
Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member]
Total loans receivable	97,294		102,112
Real Estate [Member] | Other Real Estate Loans [Member]
Total loans receivable	230		234
Commercial and Industrial Loans [Member]
Total loans receivable	57,253		57,963
Consumer Portfolio Segment [Member] | Consumer Loans[Member]
Total loans receivable	38,949		42,619
Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Total loans receivable	47,196		44,775
FUSB [Member]
Beginning balance	2,409	1,329	1,329
Charge-offs	(2)		(151)
Recoveries	114		346
Provision for loan losses			885
Ending balance	2,521		2,409
Individually evaluated for impairment	574		535
Collectively evaluated for impairment	1,947		1,874
Individually evaluated for impairment	2,164		2,103
Collectively evaluated for impairment	233,522		237,766
Total loans receivable	235,686		239,869
FUSB [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Beginning balance	535	110	110
Charge-offs
Recoveries			200
Provision for loan losses	71		225
Ending balance	606		535
Individually evaluated for impairment	422		423
Collectively evaluated for impairment	184		112
Individually evaluated for impairment	1,361		1,361
Collectively evaluated for impairment	24,492		22,411
Total loans receivable	25,853		23,772
FUSB [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Beginning balance	304	138	138
Charge-offs			(66)
Recoveries	31		23
Provision for loan losses	(52)		209
Ending balance	283		304
Individually evaluated for impairment	5		5
Collectively evaluated for impairment	278		299
Individually evaluated for impairment	191		193
Collectively evaluated for impairment	32,344		32,762
Total loans receivable	32,535		32,955
FUSB [Member] | Real Estate [Member] | Secured by Multi-family Residential Properties [Member]
Beginning balance	88	29	29
Charge-offs
Recoveries
Provision for loan losses	27		59
Ending balance	115		88
Individually evaluated for impairment
Collectively evaluated for impairment	115		88
Individually evaluated for impairment
Collectively evaluated for impairment	16,464		16,627
Total loans receivable	16,464		16,627
FUSB [Member] | Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member]
Beginning balance	903	351	351
Charge-offs			(40)
Recoveries	66
Provision for loan losses	(186)		592
Ending balance	783		903
Individually evaluated for impairment	102		107
Collectively evaluated for impairment	681		796
Individually evaluated for impairment	542		549
Collectively evaluated for impairment	96,752		101,563
Total loans receivable	97,294		102,112
FUSB [Member] | Real Estate [Member] | Other Real Estate Loans [Member]
Beginning balance	2	1	1
Charge-offs
Recoveries
Provision for loan losses			1
Ending balance	2		2
Individually evaluated for impairment
Collectively evaluated for impairment	2		2
Individually evaluated for impairment
Collectively evaluated for impairment	230		234
Total loans receivable	230		234
FUSB [Member] | Commercial and Industrial Loans [Member]
Beginning balance	527	659	659
Charge-offs			(2)
Recoveries	4		73
Provision for loan losses	157		(203)
Ending balance	688		527
Individually evaluated for impairment	45
Collectively evaluated for impairment	643		527
Individually evaluated for impairment	70
Collectively evaluated for impairment	57,183		57,963
Total loans receivable	57,253		57,963
FUSB [Member] | Consumer Portfolio Segment [Member]
Total loans receivable	6,057		6,206
FUSB [Member] | Consumer Portfolio Segment [Member] | Consumer Loans[Member]
Beginning balance	50	41	41
Charge-offs	(2)		(43)
Recoveries	13		50
Provision for loan losses	(17)		2
Ending balance	44		50
Individually evaluated for impairment
Collectively evaluated for impairment	44		50
Individually evaluated for impairment
Collectively evaluated for impairment	6,057		6,206
Total loans receivable	6,057		6,206
FUSB [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Beginning balance
Charge-offs
Recoveries
Provision for loan losses
Ending balance
Individually evaluated for impairment
Collectively evaluated for impairment
Individually evaluated for impairment
Collectively evaluated for impairment
Total loans receivable
ALC [Member]
Beginning balance	2,447	2,452	2,452
Charge-offs	(806)		(3,026)
Recoveries	202		710
Provision for loan losses	515		2,311
Ending balance	2,358		2,447
Individually evaluated for impairment
Collectively evaluated for impairment	2,358		2,447
Individually evaluated for impairment
Collectively evaluated for impairment	93,081		94,912
Total loans receivable	93,081		94,912
ALC [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Beginning balance
Charge-offs
Recoveries
Provision for loan losses
Ending balance
Individually evaluated for impairment
Collectively evaluated for impairment
Individually evaluated for impairment
Collectively evaluated for impairment
Total loans receivable
ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Beginning balance	107	250	250
Charge-offs	(13)		(56)
Recoveries	15		39
Provision for loan losses	(33)		(126)
Ending balance	76		107
Individually evaluated for impairment
Collectively evaluated for impairment	76		107
Individually evaluated for impairment
Collectively evaluated for impairment	12,993		13,724
Total loans receivable	12,993		13,724
ALC [Member] | Real Estate [Member] | Secured by Multi-family Residential Properties [Member]
Beginning balance
Charge-offs
Recoveries
Provision for loan losses
Ending balance
Individually evaluated for impairment
Collectively evaluated for impairment
Individually evaluated for impairment
Collectively evaluated for impairment
Total loans receivable
ALC [Member] | Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member]
Beginning balance
Charge-offs
Recoveries
Provision for loan losses
Ending balance
Individually evaluated for impairment
Collectively evaluated for impairment
Individually evaluated for impairment
Collectively evaluated for impairment
Total loans receivable
ALC [Member] | Real Estate [Member] | Other Real Estate Loans [Member]
Beginning balance
Charge-offs
Recoveries
Provision for loan losses
Ending balance
Individually evaluated for impairment
Collectively evaluated for impairment
Individually evaluated for impairment
Collectively evaluated for impairment
Total loans receivable
ALC [Member] | Commercial and Industrial Loans [Member]
Beginning balance
Charge-offs
Recoveries
Provision for loan losses
Ending balance
Individually evaluated for impairment
Collectively evaluated for impairment
Individually evaluated for impairment
Collectively evaluated for impairment
Total loans receivable
ALC [Member] | Consumer Portfolio Segment [Member] | Consumer Loans[Member]
Beginning balance	1,717	1,584	1,584
Charge-offs	(658)		(2,218)
Recoveries	137		451
Provision for loan losses	470		1,900
Ending balance	1,666		1,717
Individually evaluated for impairment
Collectively evaluated for impairment	1,666		1,717
Individually evaluated for impairment
Collectively evaluated for impairment	32,892		36,413
Total loans receivable	32,892		36,413
ALC [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Beginning balance	623	618	618
Charge-offs	(135)		(752)
Recoveries	50		220
Provision for loan losses	78		537
Ending balance	616		623
Individually evaluated for impairment
Collectively evaluated for impairment	616		623
Individually evaluated for impairment
Collectively evaluated for impairment	47,196		44,775
Total loans receivable	47,196		44,775
FUSB and ALC [Member]
Beginning balance	4,856	3,781	3,781
Charge-offs	(808)		(3,177)
Recoveries	316		1,056
Provision for loan losses	515		3,196
Ending balance	4,879		4,856
Individually evaluated for impairment	574		535
Collectively evaluated for impairment	4,305		4,321
Individually evaluated for impairment	2,164		2,103
Collectively evaluated for impairment	326,603		332,678
Total loans receivable	328,767		334,781
FUSB and ALC [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Beginning balance	535	110	110
Charge-offs
Recoveries			200
Provision for loan losses	71		225
Ending balance	606		535
Individually evaluated for impairment	422		423
Collectively evaluated for impairment	184		112
Individually evaluated for impairment	1,361		1,361
Collectively evaluated for impairment	24,492		22,411
Total loans receivable	25,853		23,772
FUSB and ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Beginning balance	411	388	388
Charge-offs	(13)		(122)
Recoveries	46		62
Provision for loan losses	(85)		83
Ending balance	359		411
Individually evaluated for impairment	5		5
Collectively evaluated for impairment	354		406
Individually evaluated for impairment	191		193
Collectively evaluated for impairment	45,337		46,486
Total loans receivable	45,528		46,679
FUSB and ALC [Member] | Real Estate [Member] | Secured by Multi-family Residential Properties [Member]
Beginning balance	88	29	29
Charge-offs
Recoveries
Provision for loan losses	27		59
Ending balance	115		88
Individually evaluated for impairment
Collectively evaluated for impairment	115		88
Individually evaluated for impairment
Collectively evaluated for impairment	16,464		16,627
Total loans receivable	16,464		16,627
FUSB and ALC [Member] | Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member]
Beginning balance	903	351	351
Charge-offs			(40)
Recoveries	66
Provision for loan losses	(186)		592
Ending balance	783		903
Individually evaluated for impairment	102		107
Collectively evaluated for impairment	681		796
Individually evaluated for impairment	542		549
Collectively evaluated for impairment	96,752		101,563
Total loans receivable	97,294		102,112
FUSB and ALC [Member] | Real Estate [Member] | Other Real Estate Loans [Member]
Beginning balance	2	1	1
Charge-offs
Recoveries
Provision for loan losses			1
Ending balance	2		2
Individually evaluated for impairment
Collectively evaluated for impairment	2		2
Individually evaluated for impairment
Collectively evaluated for impairment	230		234
Total loans receivable	230		234
FUSB and ALC [Member] | Commercial and Industrial Loans [Member]
Beginning balance	527	659	659
Charge-offs			(2)
Recoveries	4		73
Provision for loan losses	157		(203)
Ending balance	688		527
Individually evaluated for impairment	45
Collectively evaluated for impairment	643		527
Individually evaluated for impairment	70
Collectively evaluated for impairment	57,183		57,963
Total loans receivable	57,253		57,963
FUSB and ALC [Member] | Consumer Portfolio Segment [Member] | Consumer Loans[Member]
Beginning balance	1,767	1,625	1,625
Charge-offs	(660)		(2,261)
Recoveries	150		501
Provision for loan losses	453		1,902
Ending balance	1,710		1,767
Individually evaluated for impairment
Collectively evaluated for impairment	1,710		1,767
Individually evaluated for impairment
Collectively evaluated for impairment	38,949		42,619
Total loans receivable	38,949		42,619
FUSB and ALC [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Beginning balance	623	$ 618	618
Charge-offs	(135)		(752)
Recoveries	50		220
Provision for loan losses	78		537
Ending balance	616		623
Individually evaluated for impairment
Collectively evaluated for impairment	616		623
Individually evaluated for impairment
Collectively evaluated for impairment	47,196		44,775
Total loans receivable	$ 47,196		$ 44,775

X

- Definition

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No definition available.

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Amount of direct write-downs of accounts receivable charged against the allowance.

+ References

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-Publisher FASB
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Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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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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