Note 12 - Borrowings - Federal Home Loan Bank Advances (Details) - Federal Home Loan Bank Advances Maturing in 2019 [Member] - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Amount	$ 65,000,000	$ 105,300,000
Weighted average rate	1.83%	2.69%

The calculated weighted average interest rate for Federal Home Loan Bank advances outstanding as of the Balance Sheet date.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.13(3)(a))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Name:	us-gaap_FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateAtPeriodEnd
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant