Counterparty Risk (Tables) |
9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||
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Sep. 30, 2017 | ||||||||||||||||||||||||||||||||||||||||||||||
| Risks and Uncertainties [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||
| % Of Total Deposits With Dealers Held As Collateral | The following table details the percentage of collateral amounts held by dealers who hold greater than 15% of the Company's Due from Brokers, included as of September 30, 2017:
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| % Of Total Receivable For Securities Sold | The following table details the percentage of amounts held by dealers who hold greater than 15% of the Company's Receivable for securities sold as of September 30, 2017:
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| Schedule of Cash and Cash Equivalents [Table Text Block] | In addition, the Company held cash and cash equivalents of $111.4 million and $123.3 million as of September 30, 2017 and December 31, 2016, respectively. The below table details the concentration of cash and cash equivalents held by each counterparty:
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