Income Taxes - Net Operating Loss Carry-forwards (Details) $ in Millions	Sep. 30, 2019 USD ($)
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards, indefinite	$ 21.7
Federal
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	26.4
State
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	21.8
Foreign
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 52.3