PREPAID EXPENSES AND OTHER CURRENT ASSETS (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Income taxes receivable	$ 8,509	$ 7,053
Maintenance agreements, current portion	2,205	2,513
Prepaid expenses	5,149	4,812
Other current assets	5,102	5,101
Total	$ 20,965	$ 19,479