Note 7 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Expiry of Standby Letters of Credit Within One Year	$ 3,700
Expiry of Standby Letter of Credit Thereafter	139
Reserve for Unfunded Commitments Included in Other Liabilities	$ 595	$ 695
Real Estate Related Loans Representing Lease Portfolio	82.00%	81.00%
Insurance Claims [Member] \| Maximum [Member]
Loss Contingency, Estimate of Possible Loss	$ 225
Other Liabilities [Member]
Reserve for Unfunded Commitments Included in Other Liabilities	$ 595	$ 695

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14435-108349

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14557-108349

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118943654&loc=d3e12021-110248

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant