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UNEARNED REVENUE (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Unearned Revenue          
Deferred Revenue Recognized $ 43,200 $ 40,500 $ (85,936) $ (80,496) $ (164,972)
Contract with Customer, Liability, Noncurrent $ 17,000   $ 17,000   $ 13,700
Contract With Customer, Liability, Recognition Period     5 years