Commitments and Contingencies Purchase obligations (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Outstanding purchase commitments		$ 3.4
Purchase commitment	$ 2.5

Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

No definition available.