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Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Mar. 31, 2018
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Accrued Liabilities Current and Other Liabilities Current [Abstract] |  |
Accrued payroll | $ 822 | $ 620
Accrued housing allowance | 294 | 548
Accrued other social benefit | 1,087 | 1,792
Deposits received from customers | 25 | 17
Unbilled purchases from suppliers | 35 | 238
Accrued audit fee | 251 | 257
Others | 475 | 510
Accrued Liabilities and Other Liabilities Current, Total | $ 2,989 | $ 3,982

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