Segment Information - Long-lived assets by geographic location (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Sep. 30, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 1,273	$ 847
North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	1,270	844
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 3	$ 3