Income and Other Taxes (Narrative) (Details) - USD ($)	3 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income tax (expense) benefit	$ 126,000	$ 14,000
Effective tax rate on continuing operations	0.40%	0.00%
Interest and penalties accrued as tax liabilities	$ 600,000		$ 600,000
Uncertain tax benefit	$ 400,000

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of statutory penalties accrued for a tax position claimed or expected to be claimed by the entity, in its tax return.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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