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Selected Balance Sheet Data (Tables)
 12 Months Ended
Sep. 30, 2021
Selected Balance Sheet Data [Abstract]  
Schedule of Selected Balance Sheet Data SELECTED BALANCE SHEET DATA
The following table shows selected balance sheet data (in thousands):
As of September 30,
20212020
Accounts receivable, net:  
Accounts receivable$51,828 $65,027 
Less allowance for credit losses3,934 3,778 
Less reserve for future credit returns and pricing adjustments4,156 2,022 
Total accounts receivable, net$43,738 $59,227 
Inventories:  
Raw materials$27,265 $14,009 
Work in process14 — 
Finished goods16,642 37,559 
Total inventories$43,921 $51,568 
Property, equipment and improvements, net:
Land$570 $570 
Buildings2,338 2,338 
Improvements9,367 7,844 
Equipment16,878 17,153 
Purchased software2,868 3,770 
Furniture and fixtures2,174 3,236 
Subscriber assets6,982 5,104 
Total property, equipment and improvements, gross41,177 40,015 
Less accumulated depreciation and amortization29,045 28,508 
Total property, equipment and improvements, net$12,132 $11,507