Note 8 - Loans - Troubled Debt Restructuring (Details) $ in Thousands	3 Months Ended
Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)
No. of Contracts	11	2
Pre-Modification Outstanding Recorded Investment	$ 17,551	$ 27,683
Post-Modification Outstanding Recorded Investment	17,551	27,683
Special Reserve	$ 142
Commercial Portfolio Segment [Member]
No. of Contracts	3
Pre-Modification Outstanding Recorded Investment	$ 2,463
Post-Modification Outstanding Recorded Investment	2,463
Special Reserve
Real Estate Construction Portfolio Segment [Member]
No. of Contracts		2
Pre-Modification Outstanding Recorded Investment		$ 27,683
Post-Modification Outstanding Recorded Investment		27,683
Special Reserve
Commercial Real Estate Portfolio Segment [Member]
No. of Contracts	6
Pre-Modification Outstanding Recorded Investment	$ 14,287
Post-Modification Outstanding Recorded Investment	14,287
Special Reserve	$ 134
Residential Mortgage and Equity Lines Portfolio Segment [Member]
No. of Contracts	2
Pre-Modification Outstanding Recorded Investment	$ 801
Post-Modification Outstanding Recorded Investment	801
Special Reserve	$ 8

Amount of allowance for credit losses related to receivables which had been measured under a general allowance for credit losses methodology that are now identified as troubled debt restructurings.

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Number of 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 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

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