Quarterly report pursuant to Section 13 or 15(d)

Warrant Liabilities - Summary of Warrants Outstanding and Fair Values (Details)

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Warrant Liabilities - Summary of Warrants Outstanding and Fair Values (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Mar. 28, 2021
Mar. 29, 2020
Mar. 28, 2021
Mar. 29, 2020
Gain on Change in Fair Value of Warrant Liability $ 169 $ (1,332) $ (858) $ (81)
Warrant [Member]        
Warrant liability, fair value outstanding beginning     4,125,200 4,125,200
Warrant liability, Gain on Change in Fair Value of Warrant Liability    
Warrant liability, fair value outstanding ending 4,125,200 4,125,200 4,125,200 4,125,200
Fair Value per Share, beginning     $ 0.62 $ 0.49
Fair Value per Share, Gain on Change in Fair Value of Warrant Liability    
Fair Value per Share, ending $ 0.41 $ 0.47 $ 0.41 $ 0.47
Fair value of warrant liability, beginning     $ 2,544 $ 2,036
Gain on Change in Fair Value of Warrant Liability     (858) (81)
Fair value of warrant liability, ending $ 1,686 $ 1,955 $ 1,686 $ 1,955