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Note 5 - Loans and Allowance for Credit Losses - Troubled Debt Restructurings (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Number of Contracts	10	8
Troubled debt restructings	$ 13,291	$ 12,047
Specific allowance	1,775	655
Commercial Portfolio Segment [Member]
Troubled debt restructings	3,571	1,382
Specific allowance	855	49
Income Producing Portfolio Segment [Member]
Troubled debt restructings	4,397	5,160
Specific allowance	920	6
Owner Occupied Portfolio Segment [Member]
Troubled debt restructings	390	485
Specific allowance
Construction Portfolio Segment [Member] | Commercial and Residential Loan [Member]
Troubled debt restructings	4,933	5,020
Specific allowance		$ 600
Performing Financial Instruments [Member]
Number of Contracts	7	7
Troubled debt restructings	$ 7,924	$ 11,836
Performing Financial Instruments [Member] | Commercial Portfolio Segment [Member]
Troubled debt restructings	3,137	1,171
Performing Financial Instruments [Member] | Income Producing Portfolio Segment [Member]
Troubled debt restructings	4,397	5,160
Performing Financial Instruments [Member] | Owner Occupied Portfolio Segment [Member]
Troubled debt restructings	390	485
Performing Financial Instruments [Member] | Construction Portfolio Segment [Member] | Commercial and Residential Loan [Member]
Troubled debt restructings		$ 5,020
Nonperforming Financial Instruments [Member]
Number of Contracts	3	1
Troubled debt restructings	$ 5,367	$ 211
Nonperforming Financial Instruments [Member] | Commercial Portfolio Segment [Member]
Troubled debt restructings	434	211
Nonperforming Financial Instruments [Member] | Income Producing Portfolio Segment [Member]
Troubled debt restructings
Nonperforming Financial Instruments [Member] | Owner Occupied Portfolio Segment [Member]
Troubled debt restructings
Nonperforming Financial Instruments [Member] | Construction Portfolio Segment [Member] | Commercial and Residential Loan [Member]
Troubled debt restructings	$ 4,933

X

- Definition

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

+ References

No definition available.

+ Details

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X

- Definition

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.

+ References

No definition available.

+ Details

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X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524

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