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Note 3 - Loans and Allowance for Loan Losses - Activity for Troubled Debt Restructurings (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Commercial and Industrial [Member]
Beginning Balance	$ 1,982,000	$ 1,537,000	$ 2,989,000	$ 1,503,000
Charge-Offs	0	0	(230,000)	0
Payments	(53,000)	(1,537,000)	(935,000)	(1,662,000)
Transfers to ORE	0	0	0	0
Net Additions/Deletions	496,000	2,775,000	601,000	2,934,000
Ending Balance	2,425,000	2,775,000	2,425,000	2,775,000
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Vacant Land and Land Development and Residential Construction Loan [Member]
Beginning Balance	338,000	959,000	383,000	1,488,000
Charge-Offs	0	0	0	0
Payments	(109,000)	(25,000)	(154,000)	(554,000)
Transfers to ORE	0	0	0	0
Net Additions/Deletions	0	0	0	0
Ending Balance	229,000	934,000	229,000	934,000
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Real Estate Owner Occupied Loan [Member]
Beginning Balance	4,548,000	879,000	1,599,000	906,000
Charge-Offs	0	0	0	0
Payments	(2,764,000)	(25,000)	(3,619,000)	(52,000)
Transfers to ORE	0	0	0	0
Net Additions/Deletions	0	804,000	3,804,000	804,000
Ending Balance	1,784,000	1,658,000	1,784,000	1,658,000
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Real Estate Non Owner Occupied Loan [Member]
Beginning Balance	0	4,551,000	0	5,110,000
Charge-Offs	0	0	0	0
Payments	0	(20,000)	0	(143,000)
Transfers to ORE	0	0	0	0
Net Additions/Deletions	0	(3,967,000)	0	(4,403,000)
Ending Balance	0	564,000	0	564,000
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Real Estate Multi Family and Residential Rental Loan [Member]
Beginning Balance	0	291,000	0	716,000
Charge-Offs	0	0	0	0
Payments	0	(160,000)	0	(273,000)
Transfers to ORE	0	0	0	0
Net Additions/Deletions	0	0	0	(312,000)
Ending Balance	0	131,000	0	131,000
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Commercial and Industrial [Member]
Beginning Balance	716,000	922,000	1,001,000	1,125,000
Charge-Offs	0	0	(275,000)	0
Payments	(22,000)	(46,000)	(32,000)	(279,000)
Transfers to ORE	0	0	0	0
Net Additions/Deletions	0	116,000	0	146,000
Ending Balance	694,000	992,000	694,000	992,000
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Vacant Land and Land Development and Residential Construction Loan [Member]
Beginning Balance	0	0	0	0
Charge-Offs	0	0	0	0
Payments	0	0	0	0
Transfers to ORE	0	0	0	0
Net Additions/Deletions	0	33,000	0	33,000
Ending Balance	0	33,000	0	33,000
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Real Estate Owner Occupied Loan [Member]
Beginning Balance	2,007,000	996,000	427,000	900,000
Charge-Offs	0	0	0	(12,000)
Payments	(1,614,000)	(16,000)	(1,633,000)	(16,000)
Transfers to ORE	0	0	0	0
Net Additions/Deletions	0	0	1,599,000	108,000
Ending Balance	393,000	980,000	393,000	980,000
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Real Estate Non Owner Occupied Loan [Member]
Beginning Balance	232,000	583,000	237,000	728,000
Charge-Offs	0	0	0	0
Payments	(7,000)	(39,000)	(12,000)	(184,000)
Transfers to ORE	0	(291,000)	0	(291,000)
Net Additions/Deletions	0	661,000	0	661,000
Ending Balance	225,000	914,000	225,000	914,000
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Real Estate Multi Family and Residential Rental Loan [Member]
Beginning Balance	36,000	68,000	41,000	60,000
Charge-Offs	0	0	0	0
Payments	(4,000)	(5,000)	(9,000)	(5,000)
Transfers to ORE	0	0	0	0
Net Additions/Deletions	0	0	0	8,000
Ending Balance	32,000	63,000	32,000	63,000
Retail Portfolio Segment [Member] | Originated Loan [Member] | Home Equity and Other [Member]
Beginning Balance	1,169,000	706,000	1,127,000	385,000
Charge-Offs	0	0	0	0
Payments	(150,000)	(55,000)	(158,000)	(55,000)
Transfers to ORE	0	0	0	0
Net Additions/Deletions	0	399,000	50,000	720,000
Ending Balance	1,019,000	1,050,000	1,019,000	1,050,000
Retail Portfolio Segment [Member] | Originated Loan [Member] | One to Four Family Mortgages [Member]
Beginning Balance	144,000	154,000	146,000	157,000
Charge-Offs	0	0	0	0
Payments	(1,000)	(3,000)	(3,000)	(6,000)
Transfers to ORE	0	0	0	0
Net Additions/Deletions	0	0	0	0
Ending Balance	143,000	151,000	143,000	151,000
Retail Portfolio Segment [Member] | Acquired Loan [Member] | Home Equity and Other [Member]
Beginning Balance	240,000	206,000	219,000	208,000
Charge-Offs	(15,000)	(25,000)	(30,000)	(25,000)
Payments	(36,000)	(32,000)	(37,000)	(41,000)
Transfers to ORE	0	0	(82,000)	0
Net Additions/Deletions	113,000	53,000	232,000	60,000
Ending Balance	302,000	202,000	302,000	202,000
Retail Portfolio Segment [Member] | Acquired Loan [Member] | One to Four Family Mortgages [Member]
Beginning Balance	384,000	376,000	393,000	326,000
Charge-Offs	0	0	0	0
Payments	(8,000)	(3,000)	(17,000)	(7,000)
Transfers to ORE	0	0	0	0
Net Additions/Deletions	24,000	137,000	24,000	191,000
Ending Balance	$ 400,000	$ 510,000	$ 400,000	$ 510,000

X

- Definition

A financing receivable which had its terms modified during the period and is now considered a troubled restructuring.

+ References

No definition available.

+ Details

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X

- Definition

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+ References

No definition available.

+ Details

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X

- Definition

The cash inflow associated with a financing receivable classified as a troubled debt restructuring.

+ References

No definition available.

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X

- Definition

The transfer of a financing receivable classified as a troubled debt restructuring to other real estate.

+ References

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X

- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554

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