Annual report pursuant to Section 13 and 15(d)

Property And Equipment, Net (Details)

v3.21.2
Property And Equipment, Net (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2019
Property, Plant and Equipment [Line Items]      
Property and equipment, at cost $ 347,759 $ 336,704  
Accumulated depreciation (285,132) (269,983)  
Property and equipment, net 62,627 66,721  
Depreciation expense 34,100 54,900 $ 45,200
Land      
Property, Plant and Equipment [Line Items]      
Property and equipment, at cost 1,738 1,738  
Building and improvements      
Property, Plant and Equipment [Line Items]      
Property and equipment, at cost 11,981 11,846  
Office furniture and equipment      
Property, Plant and Equipment [Line Items]      
Property and equipment, at cost 254,102 239,057  
Leasehold improvements      
Property, Plant and Equipment [Line Items]      
Property and equipment, at cost $ 79,938 $ 84,063