ACCRUED EXPENSES (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Outside professional services expenses	$ 8,568	$ 10,367
Income and other taxes	5,418	10,387
Marketing and sales program expenses	5,969	5,860
Dividends payable	2,381	2,363
Employee-related expenses	4,785	3,536
Cloud hosting expenses	10,158	4,604
Other	4,241	8,389
Total accrued expenses	$ 41,520	$ 45,506