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3. BALANCE SHEET DETAIL - Amortization expense (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Mar. 31, 2017
Estimated future amortization expense for the six months ended September 30,    
2018 $ 307  
2019 233  
2020 233  
2021 233  
2022 233  
Thereafter 1,907  
Total $ 3,146 $ 3,302