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Income Taxes Operating Loss Carryforwards (Details) - USD ($) $ in Millions	Mar. 31, 2020	Sep. 30, 2019	Sep. 30, 2016
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 7.1
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	5.1
Deferred Tax Assets, Valuation Allowance	8.4	$ 8.5	$ 3.6
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	5.6
Inland Revenue, Singapore (IRAS) [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 0.2