Note 1 - Principles of Consolidation and Basis of Presentation - Antidilutive Securities Excluded From Weighted Average Diluted Common Shares Outstanding (Details) - shares	3 Months Ended	9 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Anti-dilutive securities (in shares)	150,000	150,000	150,000	10,718,353
Share-based Payment Arrangement, Option [Member]
Anti-dilutive securities (in shares)	150,000	150,000	150,000	2,487,584
Convertible Debt Securities [Member]
Anti-dilutive securities (in shares)				8,230,769

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Name:	us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration