v3.19.1

Non-controlling Interests (Details) - USD ($) $ in Thousands |  |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Dec. 12, 2018 | Jan. 02, 2013 | Mar. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Noncontrolling Interest [Line Items] |  |  |  |  |  |
Non-controlling interests(1) |  |  | $ 30,225 | [1] | $ 31,337 |
Non-controlling interest in Operating Partnership [Member] | Non-controlling Interest |  |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |  |
Operating Partnership Units Issued |  | 212,000 |  |  |  |
Operating Partnership LTIP Units Issued (in units) | 17,383 |  |  |  |  |
Operating Partnership LTIP Units Redeemed (in units) |  |  |  |  | 503,988 |
Operating Partnership LTIP Units Distributed (in units) |  |  |  |  | 503,988 |
Operating Partnership LTIP Units (in units) |  |  | 521,371 |  | 521,371 |
Operating Partnership Units (in units) |  |  | 212,000 |  | 212,000 |
Ownership Percentage |  |  | 2.40% |  | 2.40% | 0.70%
Noncontrolling Interest in Operating Partnerships |  |  | $ 13,900 |  | $ 13,900 |
Non-controlling interest of joint venture partner | Non-controlling Interest |  |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |  |
Non-controlling interests(1) |  |  | $ 16,200 |  | $ 17,300 |
[1] | Ellington Financial Inc.'s Condensed Consolidated Balance Sheet includes assets and liabilities of variable interest entities it has consolidated. See Note 9 for additional details on Ellington Financial Inc.'s consolidated variable interest entities.

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