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Prepaid Expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Prepaid Expenses
Prepaid corporate insurance	$ 217	$ 53
Prepaid software services and support	319	20
Prepaid employee insurance premiums	75	71
Prepaid tax deposit	135	0
Prepaid Nassdaq listing fee	29	0
Other prepaid expenses	59	46
Total prepaid assets	$ 834	$ 190

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