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Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
Income Taxes (Narrative) (Details) - USD ($) $ in Millions	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Jun. 30, 2019	Mar. 27, 2020
Tax Credit Carryforward [Line Items]
Effective federal statutory income tax rate			21.00%		35.00%
Effective income tax rate	35.90%	22.60%	54.50%	21.50%
Valuation allowance	$ 3.9		$ 3.9
Tax Year 2019 [Member]
Tax Credit Carryforward [Line Items]
Income tax receivable	$ 8.2		$ 8.2
Tax Year 2020 [Member]
Tax Credit Carryforward [Line Items]
Income tax receivable						$ 0.8