DEFERRED REVENUE AND COSTS (DEFERRED REVENUE CLASSIFICATION TABLE) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
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