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COMMITMENTS AND CONTINGENCIES (Notes) | 12 Months Ended
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Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract] |
Commitments and Contingencies Disclosure [Text Block] | PURCHASE OBLIGATIONS At December 31, 2018, the Company's expected cash outflow resulting from non-cancellable purchase obligations are summarized by year in the table below (amounts in thousands):
2019 | $ | 20,623 |
2020 | 3,674 |
2021 | 330 |
2022 | 18 |
Thereafter | 37 |
Total non-cancellable purchase obligations | $ | 24,682 |

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