Note 15 - Employee Benefit Plans (Details Textual) - USD ($)	12 Months Ended
Jun. 30, 2020	Jun. 30, 2019
Employee Stock Ownership Plan (ESOP), Cash Contributions to ESOP	$ 0	$ 0
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	75.00%	50.00%
Defined Contribution Plan, Cost	$ 252,293	$ 160,171

This item represents the amount of cash contributions during the period made by the entity to the Employee Stock Ownership Plan (ESOP).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109244661&loc=d3e17540-113929

Name:	us-gaap_EmployeeStockOwnershipPlanESOPCashContributionsToESOP
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration