Income Taxes - Operating loss carryforwards (Details) $ in Thousands	Sep. 30, 2019 USD ($)
U.S.
Operating loss carryforwards
Operating Loss Carryforwards	$ 127,013
Capital loss carryforwards	5,451
State
Operating loss carryforwards
Operating Loss Carryforwards	55,619
Capital loss carryforwards	23,038
Foreign
Operating loss carryforwards
Operating Loss Carryforwards	$ 13,548