Note 8 - Loans - Troubled Debt Restructuring (Details) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)
No. of Contracts	3	6	23	32
Pre-Modification Outstanding Recorded Investment	$ 7,585	$ 5,373	$ 25,937	$ 28,051
Post-Modification Outstanding Recorded Investment	6,165	5,373	10,814	28,051
Charge-offs	0	0	0	0
Specific reserve	$ 89	$ 2,483	$ 125	$ 2,636
Commercial Portfolio Segment [Member]
No. of Contracts	3	3	23	21
Pre-Modification Outstanding Recorded Investment	$ 7,585	$ 4,621	$ 25,937	$ 12,212
Post-Modification Outstanding Recorded Investment	6,165	4,621	10,814	12,212
Charge-offs	0	0	0	0
Specific reserve	$ 89	$ 2,467	$ 125	$ 2,493
Commercial Real Estate Portfolio Segment [Member]
No. of Contracts		1		7
Pre-Modification Outstanding Recorded Investment		$ 339		$ 14,626
Post-Modification Outstanding Recorded Investment		339		14,626
Charge-offs		0		0
Specific reserve		$ 0		$ 119
Residential Mortgage and Equity Lines Portfolio Segment [Member]
No. of Contracts		2		4
Pre-Modification Outstanding Recorded Investment		$ 413		$ 1,213
Post-Modification Outstanding Recorded Investment		413		1,213
Charge-offs		0		0
Specific reserve		$ 16		$ 24

The amount of specific reserve for allowance for credit losses.

No definition available.

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524

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- Definition

Amount, after troubled debt restructuring, of modified financing receivable.

+ References

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- Definition

Amount, before troubled debt restructuring, of financing receivable to be modified.

+ References

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- Definition

Reflects the amount of the write-down related to a troubled debt restructuring.

+ 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=118939409&loc=d3e18845-111554

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