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ACQUISITIONS (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | ---
Feb. 28, 2017 | Mar. 31, 2017 | Mar. 31, 2018 | Dec. 31, 2017
Acquisitions |  |  |  |
Investment in unconsolidated affiliate |  | $ 5,000 |  |
Assets |  |  |  |
Goodwill |  |  | $ 451,243 | $ 443,887
Kali Care |  |  |  |
Acquisitions |  |  |  |
Percentage of interest acquired | 20.00% |  |  |
Investment in unconsolidated affiliate | $ 5,000 |  |  |

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