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Restricted Cash (Tables)
3 Months Ended
Jun. 30, 2018
Restricted Cash [Abstract]  
Schedule of restricted cash
    June 30, 2018     March 31, 2018 (Recast)  
             
Brokerage customers’ cash   $ 15,439     $ 12,963  
Deferred distribution payments     8,534       8,534  
Guaranty deposits     640       350  
Reserve with Central Bank of Russia     189       115  
Total restricted cash   $ 24,802     $ 21,962