Commitments and Contingencies Purchase obligations (Details) $ in Millions	6 Months Ended
Jun. 30, 2020 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Outstanding purchase commitments	$ 8.5
Purchase commitment	$ 1.9

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.