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Patents and Other Intangible Assets - Future amortization expense (Details)
$ in Thousands
Sep. 30, 2022
USD ($)
Patents and Other Intangible Assets  
2022 (remaining 3 months) $ 38
2023 133
2024 111
2025 79
2026 45
Thereafter 34
Finite-Lived Intangible Assets, Net $ 440