Annual report pursuant to Section 13 and 15(d)

Balance sheet components - Schedule of Components of Capitalized Computer Software (Details)

v3.20.2
Balance sheet components - Schedule of Components of Capitalized Computer Software (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2018
Balance Sheet Related Disclosures [Abstract]      
Capitalized software $ 120,677 $ 103,643  
Less: Accumulated amortization (82,644) (71,274)  
Total capitalized software, net 38,033 32,369  
Capitalized software amortization expense 9,600 $ 7,200 $ 11,200
Capitalized software written off $ 600