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Balance Sheet Detail - Accounts receivable - long term, net (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Balance Sheet Detail    
Undiscounted cash flows March 31, 2023 $ 2,800  
Undiscounted cash flows March 31,2024 2,000  
Accounts receivable - long term    
Total amount due from customer 4,827 $ 484
Less unamortized discount (255) (8)
Less current portion included in accounts receivable (2,605) (398)
Total of accounts receivable, long term, net $ 1,968 $ 78