Summary of Significant Accounting Policies - Inventories (Details) - USD ($) $ in Millions	Mar. 31, 2020	Jun. 30, 2019
Summary of Significant Accounting Policies
Inventory deemed long-term and included in deposits and other assets	$ 3.8	$ 4.1
Excess and obsolete inventory reserve	$ 4.7	$ 4.1

Amount of valuation reserve for inventory.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant