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Subordinated Debentures Held by Subsidiary Trusts (Tables) | 12 Months Ended
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Dec. 31, 2017
Subordinated Borrowings [Abstract] |
Schedule of Subordinated Borrowings | A summary of Subordinated Debenture issuances follows:
|  |  |  | Principal Amount Outstanding as of December 31,
Issuance |  | Maturity Date |  | 2017 |  | 2016
October 2007 |  | January 1, 2038 |  | $ | 10.3 |  |  | $ | 10.3 |
November 2007 |  | December 15, 2037 |  | 15.5 |  |  | 15.5 |
December 2007 |  | December 15, 2037 |  | 20.6 |  |  | 20.6 |
December 2007 |  | April 1, 2038 |  | 15.5 |  |  | 15.5 |
January 2008 |  | April 1, 2038 |  | 10.3 |  |  | 10.3 |
January 2008 |  | April 1, 2038 |  | 10.3 |  |  | 10.3 |
Total subordinated debentures held by subsidiary trusts |  | $ | 82.5 |  |  | $ | 82.5 |

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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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