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Note 4 - Fair Value Measurements (Details) - Assets Measured on a Nonrecurring Basis - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Note 4 - Fair Value Measurements (Details) - Assets Measured on a Nonrecurring Basis [Line Items]
Impaired loans	$ 15,647	$ 13,681
Other real estate owned	1,400	1,400
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Note 4 - Fair Value Measurements (Details) - Assets Measured on a Nonrecurring Basis [Line Items]
Impaired loans	14,836	12,848
Other real estate owned	1,447	1,412
Estimate of Fair Value Measurement [Member] | Fair Value, Measurements, Nonrecurring [Member]
Note 4 - Fair Value Measurements (Details) - Assets Measured on a Nonrecurring Basis [Line Items]
Impaired loans	14,836	12,848
Other real estate owned	$ 1,447	$ 1,412

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Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953550-111524

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Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04(c)(Schedule III))
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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-Section 45
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-URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4437-111522

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 970
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-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024

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