Annual report pursuant to Section 13 and 15(d)

Note 5 - Fair Value Measures (Details Textual)

v3.20.2
Note 5 - Fair Value Measures (Details Textual) - USD ($)
3 Months Ended 12 Months Ended
Jun. 30, 2020
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2018
Asset Impairment Charges, Total       $ 0
Debt Securities, Available-for-sale, Total     $ 0 $ 0
Long-term Debt, Fair Value $ 50,000,000 $ 50,000,000    
Retail Segment [Member]        
Asset Impairment Charges, Total $ 4,800,000 $ 5,200,000 $ 9,900,000