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Related Party Transactions Related Party Transactions | 9 Months Ended
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Sep. 30, 2017
Related Party Transaction [Line Items] |
Related Party Transactions Disclosure [Text Block] | Related Party Transactions BlackRock, Inc., a leading publicly traded investment management firm (“BlackRock”), has purchased our common shares in the ordinary course of its investment business and has previously filed Schedules 13G/A with the SEC. On April 10, 2017, BlackRock filed a Schedule 13G/A reporting beneficial ownership as of March 31, 2017, of 12.7% of our common stock. In connection with purchasing our common shares, BlackRock filed the necessary filings with insurance regulatory authorities. On the basis of those filings, BlackRock is deemed not to be a controlling person for the purposes of applicable insurance law. We are required to disclose related party information for our transactions with BlackRock. BlackRock is highly regulated, serves its clients as a fiduciary, and has a diverse platform of active (alpha) and index (beta) investment strategies across asset classes that enables it to tailor investment outcomes and asset allocation solutions for clients. BlackRock also offers the BlackRock Solutions® investment and risk management technology platform, Aladdin®, risk analytics, advisory and technology services and solutions to a broad base of institutional and wealth management investors. In Third Quarter and Nine Months 2017, we incurred expenses related to BlackRock of $0.5 million and $1.5 million for services rendered, respectively. No material expenses were incurred with BlackRock in Third Quarter 2016 and Nine Months 2016. Amounts payable for such services at September 30, 2017 and December 31, 2016, were $0.5 million and $0.4 million, respectively. All contracts with BlackRock were consummated in the ordinary course of business on an arm's-length basis. We have no additional material transactions with related parties other than those disclosed in Note 16. "Related Party Transactions" included in Item 8. "Financial Statements and Supplementary Data." of our 2016 Annual Report.

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -URI http://asc.fasb.org/topic&trid=2122745 + Details
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