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Basis of Presentation - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Jan. 01, 2018 | Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Net loss attributable to noncontrolling interest | $ 165 | $ 297 |  |
Noncontrolling interests | 246 |  |  | $ 411
Restructuring and related cost, incurred cost | $ 500 | $ 800 |  |
Cumulative effect of change in accounting principle |  |  |  | 854
Retained Earnings |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Cumulative effect of change in accounting principle |  |  |  | $ 854
Retained Earnings | Accounting Standards Update 2014-09 |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Cumulative effect of change in accounting principle |  |  | $ 900 |

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