Note 3 - Commitments and Contingencies	9 Months Ended
Mar. 31, 2019
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	3. Commitments and Contingencies The Company’s purchase commitments at March 31, 2019 are for materials, supplies, services and equipment as part of the normal course of business.

The entire disclosure for commitments and contingencies.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-URI http://asc.fasb.org/topic&trid=2127136

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-URI http://asc.fasb.org/topic&trid=2144648

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