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Significant Accounting Policies - Schedule of Inventory (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Raw materials	$ 160	$ 144
Work-in-process	440	375
Finished goods	44	129
Inventory	644	648
Inventory reserve	(255)	(50)
Total inventory, net of reserve	$ 389	$ 598

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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