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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		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Provision for loan losses	$ 576	$ 536	$ 1,091	$ 703
Ending balance	4,905		4,905		$ 4,856
Total loans receivable	341,657		341,657		334,781
Beginning balance			4,856
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Total loans receivable	12,424		12,424		23,772
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Total loans receivable	44,456		44,456		46,679
Real Estate [Member] | Secured by Multi-family Residential Properties [Member]
Total loans receivable	16,702		16,702		16,627
Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member]
Total loans receivable	113,037		113,037		102,112
Real Estate [Member] | Other Real Estate Loans [Member]
Total loans receivable	226		226		234
Commercial and Industrial Loans [Member]
Total loans receivable	65,087		65,087		57,963
Consumer Portfolio Segment [Member] | Consumer Loans [Member]
Total loans receivable	37,591		37,591		42,619
Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Total loans receivable	52,134		52,134		44,775
FUSB [Member]
Recoveries			195		346
Provision for loan losses					885
Individually evaluated for impairment	560		560		535
Collectively evaluated for impairment	1,966		1,966		1,874
Ending balance	2,526		2,526		2,409
Individually evaluated for impairment	2,095		2,095		2,103
Collectively evaluated for impairment	243,279		243,279		237,766
Total loans receivable	245,374		245,374		239,869
Beginning balance			2,409	1,329	1,329
Charge-offs			(78)		(151)
FUSB [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Recoveries					200
Provision for loan losses			(58)		225
Individually evaluated for impairment	414		414		423
Collectively evaluated for impairment	63		63		112
Ending balance	477		477		535
Individually evaluated for impairment	1,296		1,296		1,361
Collectively evaluated for impairment	11,128		11,128		22,411
Total loans receivable	12,424		12,424		23,772
Beginning balance			535	110	110
Charge-offs
FUSB [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Recoveries			71		23
Provision for loan losses			(133)		209
Individually evaluated for impairment	5		5		5
Collectively evaluated for impairment	237		237		299
Ending balance	242		242		304
Individually evaluated for impairment	191		191		193
Collectively evaluated for impairment	32,036		32,036		32,762
Total loans receivable	32,227		32,227		32,955
Beginning balance			304	138	138
Charge-offs					(66)
FUSB [Member] | Real Estate [Member] | Secured by Multi-family Residential Properties [Member]
Recoveries
Provision for loan losses			29		59
Individually evaluated for impairment
Collectively evaluated for impairment	117		117		88
Ending balance	117		117		88
Individually evaluated for impairment
Collectively evaluated for impairment	16,702		16,702		16,627
Total loans receivable	16,702		16,702		16,627
Beginning balance			88	29	29
Charge-offs
FUSB [Member] | Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member]
Recoveries			68
Provision for loan losses			(82)		592
Individually evaluated for impairment	96		96		107
Collectively evaluated for impairment	793		793		796
Ending balance	889		889		903
Individually evaluated for impairment	538		538		549
Collectively evaluated for impairment	112,499		112,499		101,563
Total loans receivable	113,037		113,037		102,112
Beginning balance			903	351	351
Charge-offs					(40)
FUSB [Member] | Real Estate [Member] | Other Real Estate Loans [Member]
Recoveries
Provision for loan losses					1
Individually evaluated for impairment
Collectively evaluated for impairment	2		2		2
Ending balance	2		2		2
Individually evaluated for impairment
Collectively evaluated for impairment	226		226		234
Total loans receivable	226		226		234
Beginning balance			2	1	1
Charge-offs
FUSB [Member] | Commercial and Industrial Loans [Member]
Recoveries			12		73
Provision for loan losses			207		(203)
Individually evaluated for impairment	45		45
Collectively evaluated for impairment	685		685		527
Ending balance	730		730		527
Individually evaluated for impairment	70		70
Collectively evaluated for impairment	65,017		65,017		57,963
Total loans receivable	65,087		65,087		57,963
Beginning balance			527	659	659
Charge-offs			(16)		(2)
FUSB [Member] | Consumer Portfolio Segment [Member]
Total loans receivable	5,671		5,671		6,206
FUSB [Member] | Consumer Portfolio Segment [Member] | Consumer Loans [Member]
Recoveries			44		50
Provision for loan losses			37		2
Individually evaluated for impairment
Collectively evaluated for impairment	69		69		50
Ending balance	69		69		50
Individually evaluated for impairment
Collectively evaluated for impairment	5,671		5,671		6,206
Total loans receivable	5,671		5,671		6,206
Beginning balance			50	41	41
Charge-offs			(62)		(43)
FUSB [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Recoveries
Provision for loan losses
Individually evaluated for impairment
Collectively evaluated for impairment
Ending balance
Individually evaluated for impairment
Collectively evaluated for impairment
Total loans receivable
Beginning balance
Charge-offs
ALC [Member]
Recoveries			380		710
Provision for loan losses			1,091		2,311
Individually evaluated for impairment
Collectively evaluated for impairment	2,379		2,379		2,447
Ending balance	2,379		2,379		2,447
Individually evaluated for impairment
Collectively evaluated for impairment	96,283		96,283		94,912
Total loans receivable	96,283		96,283		94,912
Beginning balance			2,447	2,452	2,452
Charge-offs			(1,539)		(3,026)
ALC [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Recoveries
Provision for loan losses
Individually evaluated for impairment
Collectively evaluated for impairment
Ending balance
Individually evaluated for impairment
Collectively evaluated for impairment
Total loans receivable
Beginning balance
Charge-offs
ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Recoveries			22		39
Provision for loan losses			(64)		(126)
Individually evaluated for impairment
Collectively evaluated for impairment	48		48		107
Ending balance	48		48		107
Individually evaluated for impairment
Collectively evaluated for impairment	12,229		12,229		13,724
Total loans receivable	12,229		12,229		13,724
Beginning balance			107	250	250
Charge-offs			(17)		(56)
ALC [Member] | Real Estate [Member] | Secured by Multi-family Residential Properties [Member]
Recoveries
Provision for loan losses
Individually evaluated for impairment
Collectively evaluated for impairment
Ending balance
Individually evaluated for impairment
Collectively evaluated for impairment
Total loans receivable
Beginning balance
Charge-offs
ALC [Member] | Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member]
Recoveries
Provision for loan losses
Individually evaluated for impairment
Collectively evaluated for impairment
Ending balance
Individually evaluated for impairment
Collectively evaluated for impairment
Total loans receivable
Beginning balance
Charge-offs
ALC [Member] | Real Estate [Member] | Other Real Estate Loans [Member]
Recoveries
Provision for loan losses
Individually evaluated for impairment
Collectively evaluated for impairment
Ending balance
Individually evaluated for impairment
Collectively evaluated for impairment
Total loans receivable
Beginning balance
Charge-offs
ALC [Member] | Commercial and Industrial Loans [Member]
Recoveries
Provision for loan losses
Individually evaluated for impairment
Collectively evaluated for impairment
Ending balance
Individually evaluated for impairment
Collectively evaluated for impairment
Total loans receivable
Beginning balance
Charge-offs
ALC [Member] | Consumer Portfolio Segment [Member] | Consumer Loans [Member]
Recoveries			264		451
Provision for loan losses			886		1,900
Individually evaluated for impairment
Collectively evaluated for impairment	1,690		1,690		1,717
Ending balance	1,690		1,690		1,717
Individually evaluated for impairment
Collectively evaluated for impairment	31,920		31,920		36,413
Total loans receivable	31,920		31,920		36,413
Beginning balance			1,717	1,584	1,584
Charge-offs			(1,177)		(2,218)
ALC [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Recoveries			94		220
Provision for loan losses			269		537
Individually evaluated for impairment
Collectively evaluated for impairment	641		641		623
Ending balance	641		641		623
Individually evaluated for impairment
Collectively evaluated for impairment	52,134		52,134		44,775
Total loans receivable	52,134		52,134		44,775
Beginning balance			623	618	618
Charge-offs			(345)		(752)
FUSB and ALC [Member]
Recoveries			575		1,056
Provision for loan losses			1,091		3,196
Individually evaluated for impairment	560		560		535
Collectively evaluated for impairment	4,345		4,345		4,321
Ending balance	4,905		4,905		4,856
Individually evaluated for impairment	2,095		2,095		2,103
Collectively evaluated for impairment	339,562		339,562		332,678
Total loans receivable	341,657		341,657		334,781
Beginning balance			4,856	3,781	3,781
Charge-offs			(1,617)		(3,177)
FUSB and ALC [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Recoveries					200
Provision for loan losses			(58)		225
Individually evaluated for impairment	414		414		423
Collectively evaluated for impairment	63		63		112
Ending balance	477		477		535
Individually evaluated for impairment	1,296		1,296		1,361
Collectively evaluated for impairment	11,128		11,128		22,411
Total loans receivable	12,424		12,424		23,772
Beginning balance			535	110	110
Charge-offs
FUSB and ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Recoveries			93		62
Provision for loan losses			(197)		83
Individually evaluated for impairment	5		5		5
Collectively evaluated for impairment	285		285		406
Ending balance	290		290		411
Individually evaluated for impairment	191		191		193
Collectively evaluated for impairment	44,265		44,265		46,486
Total loans receivable	44,456		44,456		46,679
Beginning balance			411	388	388
Charge-offs			(17)		(122)
FUSB and ALC [Member] | Real Estate [Member] | Secured by Multi-family Residential Properties [Member]
Recoveries
Provision for loan losses			29		59
Individually evaluated for impairment
Collectively evaluated for impairment	117		117		88
Ending balance	117		117		88
Individually evaluated for impairment
Collectively evaluated for impairment	16,702		16,702		16,627
Total loans receivable	16,702		16,702		16,627
Beginning balance			88	29	29
Charge-offs
FUSB and ALC [Member] | Real Estate [Member] | Secured by Non-farm, Non-residential Properties [Member]
Recoveries			68
Provision for loan losses			(82)		592
Individually evaluated for impairment	96		96		107
Collectively evaluated for impairment	793		793		796
Ending balance	889		889		903
Individually evaluated for impairment	538		538		549
Collectively evaluated for impairment	112,499		112,499		101,563
Total loans receivable	113,037		113,037		102,112
Beginning balance			903	351	351
Charge-offs					(40)
FUSB and ALC [Member] | Real Estate [Member] | Other Real Estate Loans [Member]
Recoveries
Provision for loan losses					1
Individually evaluated for impairment
Collectively evaluated for impairment	2		2		2
Ending balance	2		2		2
Individually evaluated for impairment
Collectively evaluated for impairment	226		226		234
Total loans receivable	226		226		234
Beginning balance			2	1	1
Charge-offs
FUSB and ALC [Member] | Commercial and Industrial Loans [Member]
Recoveries			12		73
Provision for loan losses			207		(203)
Individually evaluated for impairment	45		45
Collectively evaluated for impairment	685		685		527
Ending balance	730		730		527
Individually evaluated for impairment	70		70
Collectively evaluated for impairment	65,017		65,017		57,963
Total loans receivable	65,087		65,087		57,963
Beginning balance			527	659	659
Charge-offs			(16)		(2)
FUSB and ALC [Member] | Consumer Portfolio Segment [Member] | Consumer Loans [Member]
Recoveries			308		501
Provision for loan losses			923		1,902
Individually evaluated for impairment
Collectively evaluated for impairment	1,759		1,759		1,767
Ending balance	1,759		1,759		1,767
Individually evaluated for impairment
Collectively evaluated for impairment	37,591		37,591		42,619
Total loans receivable	37,591		37,591		42,619
Beginning balance			1,767	1,625	1,625
Charge-offs			(1,239)		(2,261)
FUSB and ALC [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Recoveries			94		220
Provision for loan losses			269		537
Individually evaluated for impairment
Collectively evaluated for impairment	641		641		623
Ending balance	641		641		623
Individually evaluated for impairment
Collectively evaluated for impairment	52,134		52,134		44,775
Total loans receivable	$ 52,134		52,134		44,775
Beginning balance			623	$ 618	618
Charge-offs			$ (345)		$ (752)

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

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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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