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Note 5 - Loans Receivable and Allowance for Loan and Lease Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018		Dec. 31, 2017
Balance	$ 6,297	$ 4,675	$ 5,242
Charge-offs	(35)	(304)	(3,180)
Recoveries	44	2,783	149
Provisions (credits)	1,303	(857)	2,464
Balance	7,609	6,297	4,675
Total allowance for loan and lease losses	6,297	6,297	4,675	$ 7,609		$ 6,297
Business Activities Loans [Member]
Balance	6,297
Balance	7,609	6,297
Allowance for loan losses: Individually evaluated for impairment				1,545		253
Allowance for loan losses: Collectively evaluated for impairment				6,064		6,044
Total allowance for loan and lease losses	7,609	6,297		7,609		6,297
Loans receivable, gross: Individually evaluated for impairment				21,218		6,753
PCI loans individually evaluated for impairment				615
Loans receivable, gross: Collectively evaluated for impairment				758,543		712,894
Total loans receivable, gross				780,376	[1]	719,647
Commercial Real Estate Portfolio Segment [Member]
Balance	2,212	1,853	1,970
Charge-offs	0	0
Recoveries	7	10	80
Provisions (credits)	(353)	349	(197)
Balance	1,866	2,212	1,853
Total allowance for loan and lease losses	2,212	2,212	1,853	1,866		2,212
Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member]
Balance	2,212
Balance	1,866	2,212
Allowance for loan losses: Individually evaluated for impairment				0		0
Allowance for loan losses: Collectively evaluated for impairment				1,866		2,212
Total allowance for loan and lease losses	1,866	2,212		1,866		2,212
Loans receivable, gross: Individually evaluated for impairment				4,606		1,977
PCI loans individually evaluated for impairment
Loans receivable, gross: Collectively evaluated for impairment				270,332		297,948
Total loans receivable, gross				274,938		299,925
Residential Portfolio Segment [Member]
Balance	959	534	740
Charge-offs	(2)	0	(190)
Recoveries	2	0	1
Provisions (credits)	100	425	(17)
Balance	1,059	959	534
Total allowance for loan and lease losses	959	959	534	1,059		959
Residential Portfolio Segment [Member] | Business Activities Loans [Member]
Balance	959
Balance	1,059	959
Allowance for loan losses: Individually evaluated for impairment				216		0
Allowance for loan losses: Collectively evaluated for impairment				843		959
Total allowance for loan and lease losses	1,059	959		1,059		959
Loans receivable, gross: Individually evaluated for impairment				2,302		3,336
PCI loans individually evaluated for impairment
Loans receivable, gross: Collectively evaluated for impairment				154,998		143,041
Total loans receivable, gross				157,300		146,377
Commercial Portfolio Segment [Member]
Balance	2,023	740	1,027
Charge-offs	0	(265)	(2,977)
Recoveries	34	2,769	66
Provisions (credits)	1,501	(1,221)	2,624
Balance	3,558	2,023	740
Total allowance for loan and lease losses	2,023	2,023	740	3,558		2,023
Commercial Portfolio Segment [Member] | Business Activities Loans [Member]
Balance	2,023
Balance	3,558	2,023
Allowance for loan losses: Individually evaluated for impairment				1,299		251
Allowance for loan losses: Collectively evaluated for impairment				2,259		1,772
Total allowance for loan and lease losses	3,558	2,023		3,558		2,023
Loans receivable, gross: Individually evaluated for impairment				4,646		748
PCI loans individually evaluated for impairment				615
Loans receivable, gross: Collectively evaluated for impairment				186,591		130,413
Total loans receivable, gross				191,852		131,161
Consumer Portfolio Segment [Member]
Balance	568	641	677
Charge-offs	(33)	(39)	(13)
Recoveries	1	4	2
Provisions (credits)	105	(38)	(25)
Balance	641	568	641
Total allowance for loan and lease losses	568	568	641	641		568
Consumer Portfolio Segment [Member] | Business Activities Loans [Member]
Balance	568
Balance	641	568
Allowance for loan losses: Individually evaluated for impairment				30		2
Allowance for loan losses: Collectively evaluated for impairment				611		566
Total allowance for loan and lease losses	641	568		641		568
Loans receivable, gross: Individually evaluated for impairment				864		692
PCI loans individually evaluated for impairment
Loans receivable, gross: Collectively evaluated for impairment				93,705		87,015
Total loans receivable, gross				94,569		87,707
Construction Portfolio Segment [Member]
Balance	481	712	486
Charge-offs	0	0
Recoveries	0	0
Provisions (credits)	(131)	(231)	226
Balance	350	481	712
Total allowance for loan and lease losses	481	481	712	350		481
Construction Portfolio Segment [Member] | Business Activities Loans [Member]
Balance	481
Balance	350	481
Allowance for loan losses: Individually evaluated for impairment				0		0
Allowance for loan losses: Collectively evaluated for impairment				350		481
Total allowance for loan and lease losses	350	481		350		481
Loans receivable, gross: Individually evaluated for impairment				8,800		0
PCI loans individually evaluated for impairment
Loans receivable, gross: Collectively evaluated for impairment				37,240		47,619
Total loans receivable, gross				46,040		47,619
Construction to Permanent Portfolio Segment [Member]
Balance	54	69	123
Charge-offs	0	0
Recoveries	0	0
Provisions (credits)	54	(15)	(54)
Balance	108	54	69
Total allowance for loan and lease losses	54	54	69	108		54
Construction to Permanent Portfolio Segment [Member] | Business Activities Loans [Member]
Balance	54
Balance	108	54
Allowance for loan losses: Individually evaluated for impairment				0		0
Allowance for loan losses: Collectively evaluated for impairment				108		54
Total allowance for loan and lease losses	108	54		108		54
Loans receivable, gross: Individually evaluated for impairment				0		0
PCI loans individually evaluated for impairment
Loans receivable, gross: Collectively evaluated for impairment				15,677		6,858
Total loans receivable, gross				15,677		6,858
Unallocated Financing Receivables [Member]
Balance		126	219
Charge-offs	0	0
Recoveries	0	0
Provisions (credits)	27	(126)	(93)
Balance	27		126
Total allowance for loan and lease losses			$ 126	27
Unallocated Financing Receivables [Member] | Business Activities Loans [Member]
Balance
Balance	27
Allowance for loan losses: Individually evaluated for impairment				0		0
Allowance for loan losses: Collectively evaluated for impairment				27		0
Total allowance for loan and lease losses	$ 27			27
Loans receivable, gross: Individually evaluated for impairment				0		0
PCI loans individually evaluated for impairment
Loans receivable, gross: Collectively evaluated for impairment						0
Total loans receivable, gross						$ 0
[1] The total loan receivable, gross does not include $21.9 million acquired loans which were all individually evaluated for impairment.

X

- Definition

The amount of acquired loans that were individually evaluated for impairment.

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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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