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Note 12 - Fair Value Measurements - Assets Measured at Fair Value Based on Significant Unobservable Inputs (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Equity Investment Other [Member]
Beginning balance	$ 219	$ 219
Realized gain (loss) included in earnings - net mortgage banking derivatives
Ending balance	219	219
Beginning balance
Realized (gain) loss included in earnings - net mortgage banking derivatives
Ending balance
Derivative Assets and Liabilities [Member]
Beginning balance	24	146
Realized gain (loss) included in earnings - net mortgage banking derivatives	495	(122)
Ending balance	519	24
Beginning balance	30	250
Realized (gain) loss included in earnings - net mortgage banking derivatives	663	(220)
Ending balance	693	30
Beginning balance	243	365
Realized gain (loss) included in earnings - net mortgage banking derivatives	495	(122)
Ending balance	738	243
Beginning balance	30	250
Realized (gain) loss included in earnings - net mortgage banking derivatives	663	(220)
Ending balance	$ 693	$ 30

X

- Definition

Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

+ Details

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X

- Definition

Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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Period Type:	instant

X

- Definition

Amount of gain (loss) recognized on the income statement for financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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X

- Definition

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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