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Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2018		Sep. 30, 2019
Income Tax Disclosure [Abstract]
Valuation allowance	$ 3,291	[1]	$ 3,810
Income tax provision for Tax Cuts & Jobs Act of 2017	$ 3,000
Tax Credit Carryforward [Line Items]
U.S. capital loss carryforward			2,600
United States Federal Tax Jurisdiction
Tax Credit Carryforward [Line Items]
Federal and state research and development tax credits			2,400
U.S. capital loss carryforward			2,200
Deferred Tax Assets, Other Tax Carryforwards			100
Foreign Tax Authority
Tax Credit Carryforward [Line Items]
Non-U.S. operating losses			$ 300
[1] Prior period information has been restated for the adoption of ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606)”, which we adopted on October 1, 2018.

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