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Patents and Other Intangible Assets - Future amortization expense (Details)
$ in Thousands
Jun. 30, 2022
USD ($)
Patents and Other Intangible Assets  
2022 (remaining 6 months) $ 59
2023 96
2024 74
2025 42
2026 9
Thereafter 12
Finite-Lived Intangible Assets, Net $ 292