Annual report pursuant to Section 13 and 15(d)

Balance sheet components - Schedule of cash, cash equivalents and restricted cash (Details)

v3.20.2
Balance sheet components - Schedule of cash, cash equivalents and restricted cash (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2017
Balance Sheet Related Disclosures [Abstract]        
Cash and cash equivalents $ 71,737 $ 105,565 $ 349,245 $ 166,252
Restricted cash (recorded within "prepaid expenses and other current assets") 16,824 10,927 7,314 13,475
Cash, cash equivalents and restricted cash $ 88,561 $ 116,492 $ 356,559 $ 179,727