ACCRUED EXPENSES (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Outside professional services expenses	$ 8,513	$ 10,367
Income and other taxes	6,401	10,387
Marketing and sales program expenses	12,115	5,860
Dividends payable	2,375	2,363
Employee-related expenses	5,378	3,536
Cloud hosting expenses	11,978	4,604
Other	3,612	8,389
Total accrued expenses	$ 50,372	$ 45,506