PREPAID EXPENSES AND OTHER CURRENT ASSETS (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Maintenance agreements, current portion	$ 1,923	$ 5,600
Income taxes receivable	5,098	7,940
Prepaid expenses	3,924	7,484
Other current assets	4,269	9,696
Total	$ 15,214	$ 30,720