Commitments and Contingencies - Narrative (Details) - USD ($) shares in Thousands, $ in Millions	12 Months Ended
Sep. 30, 2019	Sep. 30, 2018
Operating Leased Assets [Line Items]
Operating Leases, Rent Expense (in Dollars)	$ 0.7	$ 0.8
Capital lease term	4 years
Capital lease, current	$ 0.4
Capital lease, noncurrent	$ 0.3
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	201
Equipment
Operating Leased Assets [Line Items]
Operating lease term	4 years
Office space
Operating Leased Assets [Line Items]
Operating lease term	2 years

Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

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Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

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- Definition

Term of lessee's finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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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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- Definition

The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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