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Summary of Significant Accounting Policies - Income Taxes (Details) $ in Millions	12 Months Ended
	Sep. 30, 2019 USD ($)
Accounting Policies [Abstract]
Interest expense	$ 0.3

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- References

No definition available.

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- Definition

Amount of interest expense for an underpayment of income taxes.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319

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