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4. BALANCE SHEET DETAIL - Future amortization (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Mar. 31, 2020
Fiscal year ending March 31,    
2022 $ 233  
2023 233  
2024 233  
2025 233  
2026 233  
Thereafter 1,091  
Total $ 2,256 $ 2,489