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Nature of Operations, Background, and Basis of Presentation - Liquidity (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Nature of Operations, Background, and Basis of Presentation [Abstract]    
Net loss $ (13,029) $ (13,085)
Accumulated deficit (28,779) (16,595)
Working capital, Net 7,900 7,900
Cash and cash equivalents $ 4,483 $ 4,957