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Recent Accounting Pronouncements Recent Accounting Pronouncements Narrative (Details) - USD ($) $ in Thousands | Mar. 31, 2016 | Jan. 01, 2016 | Dec. 31, 2015
--- | --- | --- | ---
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Investments—affiliates | $ 131,980 |  | $ 141,748 |
Redeemable noncontrolling interest in subsidiaries | 25,905 |  | 8,734 |
Total financial assets | 343,103 |  | 347,746 |
Accounting Standards Update 2015-02 [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Investments—affiliates |  |  | 11,500 |
Investments Measured Using NAV Practical Expedient [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Investments—affiliates | 24,789 |  | 24,326 | [1]
Total financial assets | $ 30,198 |  | 31,759 |
Investments Measured Using NAV Practical Expedient [Member] | Accounting Standards Update 2015-07 [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Total financial assets |  |  | $ 31,759 |
Retained Earnings [Member] | Accounting Standards Update 2015-02 [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Reclassification adjustment from accumulated other comprehensive loss, net of tax to retained earnings |  | $ 831 |  |
Consolidated Entities [Member] | Accounting Standards Update 2015-02 [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Consolidated assets, investment companies |  | 29,400 |  |
Consolidated liabilities |  | 200 |  |
Redeemable noncontrolling interest in subsidiaries |  | 17,700 |  |
Deconsolidation [Member] | Accounting Standards Update 2015-02 [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Consolidated assets, investment companies |  | 5,500 |  |
Consolidated liabilities |  | 2,700 |  |
Redeemable noncontrolling interest in subsidiaries |  | $ 2,800 |  |
[1] | Investments that calculate NAV as a practical expedient were recategorized and are no longer included in Level 2 as of December 31, 2015 (see Note (2) for additional information).

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