Details of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	$ 94,864	$ 87,835
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	91,190	82,166
Canada
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	2,417	3,709
Colombia
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue		5
Russian Federation
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	2,924	2,668
United Kingdom
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	3,210	2,488
Eliminations
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	$ (4,877)	$ (3,201)