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Income Taxes (Details Textual) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Mar. 31, 2019
Income Tax Disclosure [Abstract]      
Restriction of deductibility of certain executive compensation $ 1.0    
Deferred tax remeasurement   $ 0.5  
Deferred Tax Assets, Tax Credit Carryforwards, Foreign 1.5    
Tax Credit Carryforward, Valuation Allowance 0.3   $ 0.6
Liability for Uncertain Tax Positions, Noncurrent $ 0.5