Income Taxes (Narrative) (Details) - Federal [Member] - USD ($) $ in Millions	Sep. 30, 2020	Jun. 30, 2020
Income Tax Authority [Line Items]
Accrued income taxes	$ 1.9
Prepaid income taxes		$ 5.3

Amount of asset related to consideration paid in advance for income and other taxes that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant