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DEFERRED REVENUE AND COSTS (DEFERRED REVENUE CLASSIFICATION TABLE) (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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DEFERRED REVENUE AND COSTS [ABSTRACT] |  |
Deferred revenue - current | $ 95,608 | $ 39,956
Deferred revenue - long-term | 17,078 | 17,434
Total deferred revenue | $ 112,686 | $ 57,390

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