Details of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	$ 95,809	$ 75,748
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	91,222	79,019
Canada
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	5,266	8,311
Colombia
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	408	300
Russian Federation
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	4,286	3,539
United Kingdom
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	2,905	3,095
Eliminations
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	$ (8,278)	$ (18,516)