Note 5 - Loans Receivable - Major Components of Loans, Net of Fair Value Adjustments, Acquired From Business Acquisition (Details) - Great State Bank [Member] $ in Thousands	Jul. 01, 2018 USD ($)
Loans acquired	$ 95,108
Construction and Development Loan [Member]
Loans acquired	7,496
Farmland Loan [Member]
Loans acquired	720
Residential Loan [Member]
Loans acquired	26,006
Commercial Mortgage Loan [Member]
Loans acquired	47,953
Commercial and Agricultural Loan [Member]
Loans acquired	11,793
Consumer and Other Loan [Member]
Loans acquired	$ 1,140

Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472

Name:	us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant