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Patents and Other Intangible Assets - Future amortization expense (Details)
$ in Thousands
Sep. 30, 2023
USD ($)
Patents and Other Intangible Assets  
2023 (remaining 3 months) $ 33
2024 125
2025 95
2026 60
2027 38
Thereafter 6
Finite-Lived Intangible Assets, Net $ 357