Annual report pursuant to Section 13 and 15(d)

Business segments - Schedule of Long-Lived Assets by Geographical Areas (Details)

v3.10.0.1
Business segments - Schedule of Long-Lived Assets by Geographical Areas (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Sep. 30, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets $ 134,278 $ 156,947
United States    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets 98,340 101,530
Australia    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets 20,545 32,165
Canada    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets 9,504 13,670
United Kingdom    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets 5,498 9,251
Rest of World    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets $ 391 $ 331