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Fair Value Disclosure - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2020
Mar. 31, 2019
Jun. 30, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Impairment of non-marketable equity securities $ 0 $ 700,000 $ 0 $ 700,000.0  
Investments         $ 700,000
Fair Value, Measurements, Recurring | Level 2          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Fair value of debt outstanding $ 33,200,000   $ 33,200,000   $ 23,600,000