Annual report pursuant to Section 13 and 15(d)

Balance Sheet Detail - Accounts receivable - long term, net (Details)

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Balance Sheet Detail - Accounts receivable - long term, net (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Accounts receivable - long term    
Total amount due from customer $ 484 $ 1,853
Less unamortized discount (8) (49)
Less current portion included in accounts receivable (398) (1,500)
Total of accounts receivable, long term, net $ 78 $ 304