Customer Liabilities  | 
3 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2018  | ||||||||||||||||||||||||||||||||||||||||||||||
| Contract with Customer, Liability [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||
| Customer Liabilities | 
 The Company recognizes customer liabilities associated with funds held by our brokerage and bank customers. Customer liabilities consist of: 
 
 
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- References No definition available. 
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- References No definition available. 
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