XML 73 R57.htm IDEA: XBRL DOCUMENT v3.23.3
Property and Equipment - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2021
Property, Plant and Equipment [Abstract]      
Construction in progress, gross $ 7,700 $ 1,500  
Depreciation expense 11,600 10,300 $ 8,000
Impairment loss of property and equipment $ 58 $ 1,000 $ 2,000