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CASH FLOW INFORMATION - ASU 2018-15 (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Accounting Standards Update |  |  |
Net cash provided by operating activities | $ 65,907 | $ 24,071 | $ (52,307)
Net cash provided by investing activities | $ (195,375) | 17,405 | 25,051
Previously reported |  |  |
Accounting Standards Update |  |  |
Net cash provided by operating activities |  | 26,515 | (49,982)
Net cash provided by investing activities |  | 14,961 | 22,726
ASU 2016-15 | Reclassification |  |  |
Accounting Standards Update |  |  |
Net cash provided by operating activities |  | (2,444) | (2,325)
Net cash provided by investing activities |  | $ 2,444 | $ 2,325

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