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Basis of Presentation and Summary of Significant Accounting Policies - Reconciliation of Basic and Diluted Loss per Share (Details)
shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 11, 2020
Jun. 30, 2022
USD ($)
shares
Mar. 31, 2022
USD ($)
Jun. 30, 2021
USD ($)
shares
Mar. 31, 2021
USD ($)
Jun. 30, 2022
USD ($)
shares
Jun. 30, 2021
USD ($)
shares
Numerator:              
Net loss | $   $ (2,486) $ (2,821) $ (2,473) $ (1,642) $ (5,307) $ (4,115)
Denominator:              
Basic weighted average common shares outstanding (in shares)   7,166   4,211   6,803 3,913
Diluted weighted average common shares outstanding (in shares)   7,166   4,211   6,803 3,913
Reverse stock split ratio 0.2