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OTHER LONG-TERM LIABILITIES (Tables) | 6 Months Ended
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Jun. 30, 2019
Other Liabilities, Noncurrent [Abstract] |
Other Noncurrent Liabilities [Table Text Block] | The components of Other long-term liabilities as of June 30, 2019 and December 31, 2018 are as follows (in thousands):
|  |  | June 30, 2019 |  | December 31, 2018 |
Deferred revenue |  |  | $ | 31,331 |  | $ | 33,247 |
Deferred compensation plan |  |  |  | 17,973 |  |  | 14,836 |
Payable for remaining portion of acquisition |  |  |  | — |  |  | 37,756 |
Other |  |  |  | 30,684 |  |  | 40,693 |
Total |  |  | $ | 79,988 |  | $ | 126,532 |

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- Definition Tabular disclosure of other noncurrent liabilities. + References No definition available. + Details
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