Annual report pursuant to Section 13 and 15(d)

Income Taxes - Narrative (Details)

v3.22.2.2
Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Net operating loss carryforwards      
Cash and cash equivalents $ 40,658 $ 135,061  
Unrecognized tax benefits that, if recognized, would affect the annual effective income tax rate 7,300 12,600  
Interest expense recognized related to unrecognized tax benefits (less than) 0 100 $ 100
Net liability balance   2,100  
Interest and penalties included in net liability balance 0 $ 100  
Foreign Tax Authority      
Net operating loss carryforwards      
Cash and cash equivalents $ 37,200