Note 12 - Regulatory Matters (Details Textual) - USD ($)	Jan. 01, 2019	Jan. 01, 2016	Jun. 30, 2019	Jun. 30, 2018
Percentage of Capital Implementation	2.50%	0.625%
Capital Conservation Buffer			2.50%	1.875%
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval			$ 7,286

Amount of dividends that can be declared or paid without approval of regulatory agency.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant