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Indicates line item in statement in which net income is reported that includes gain (loss) from asset measured at fair value using unobservable input (level 3).

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

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Yield on the receivable, on which interest has been imputed, as calculated from its issuance value or purchase price. The calculated effective interest rate considers factors such as the issued face value or price paid for the receivable, the time period between payments, and the time until maturity [full receipt] of the receivable.

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The principal amount of the receivable or note before consideration of the discount or premium.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Equity Method and Other Investments - Term Loan Receivable, Convertible Debt, and Warrant (Details) - USD ($) $ in Millions		12 Months Ended
	Nov. 28, 2016	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2016	Sep. 30, 2015
BioCision, LLC
Schedule of Equity Method Investments [Line Items]
Loan receivable				$ 1.5
Annual interest rate (percent)				10.00%
Loan receivable, carrying value	$ 1.6
Convertible debt securities and warrant, purchase price					$ 5.0
Loan receivable, fair value	1.6
Convertible Debt Securities
Schedule of Equity Method Investments [Line Items]
Loss on settlement of financial instruments	0.2
Loss on settlement of financial instruments, consolidated statements of operations		us-gaap:OtherNonoperatingIncomeExpense	us-gaap:OtherNonoperatingIncomeExpense
Convertible Debt Securities \| BioCision, LLC
Schedule of Equity Method Investments [Line Items]
Investment maturity period				5 years
Annual interest rate (percent)				9.00%
Convertible debt securities, carrying value	5.8
Fair Value, Measurements, Recurring \| Significant Unobservable Inputs (Level 3) \| Convertible Debt Securities \| BioCision, LLC
Schedule of Equity Method Investments [Line Items]
Convertible debt securities, fair value	5.6
Fair Value, Measurements, Recurring \| Warrants \| Significant Unobservable Inputs (Level 3) \| BioCision, LLC \| Maximum
Schedule of Equity Method Investments [Line Items]
Stock warrant	$ 0.1