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Debt Securities Issued (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Mar. 31, 2019
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Debt Securities [Abstract] |  |
Debt securities issued denominated in USD | $ 18,479 | $ 20,265
Debt securities issued denominated in RUB | 7,762 | 7,724
Accrued interest | 535 | 549
Total | $ 26,776 | $ 28,538

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