Segment Information - Schedule of Long-Lived Assets by Geographical Areas (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	$ 97,625	$ 98,628
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	58,514	58,531
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	35,214	36,381
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	$ 3,897	$ 3,716