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Subordinated Debt (Tables) | 9 Months Ended
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Sep. 30, 2018
Debt Disclosure [Abstract] |
Schedule of Subordinated Borrowing |
| September 30, 2018 |  | December 31, 2017
| Principal |  | Unamortized Discount and Debt Issuance Costs |  | Principal |  | Unamortized Discount and Debt Issuance Costs
2021 Debenture | $ | — |  |  | $ | — |  |  | $ | 3,000 |  |  | $ | — |
2025 Note | 10,000 |  |  | (168 | ) |  | 10,000 |  |  | (186 | )
2026 Notes | 25,000 |  |  | (995 | ) |  | 25,000 |  |  | (1,088 | )
Total | $ | 35,000 |  |  | $ | (1,163 | ) |  | $ | 38,000 |  |  | $ | (1,274 | )

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- Definition Tabular disclosure of borrowings under subordinated debt agreements that qualify as available in computing net capital under SEC uniform net capital rules for broker-dealers, including restrictive covenants, collateral, interest rates and due dates, amounts due by date and amount owed in total. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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