Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Supplementary Financial Statement Information (Details) - Schedule of revenue by major customers

v3.21.1
Supplementary Financial Statement Information (Details) - Schedule of revenue by major customers - USD ($)
$ in Thousands
 12 Months Ended
Dec. 10, 2020
Dec. 10, 2019
Dec. 10, 2018
Customer A [Member]      
Supplementary Financial Statement Information (Details) - Schedule of revenue by major customers [Line Items]      
Total revenues $ 4,929 $ 1,374 $ 4,274
Customer B [Member]      
Supplementary Financial Statement Information (Details) - Schedule of revenue by major customers [Line Items]      
Total revenues $ 822 242  
Customer C [Member]      
Supplementary Financial Statement Information (Details) - Schedule of revenue by major customers [Line Items]      
Total revenues   $ 419 $ 505