EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan, expense	$ 19,697	$ 16,607	$ 14,099
U.S. 401(k) Plan
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan, expense	6,676	5,506	5,003
International Plans
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan, expense	$ 13,021	$ 11,101	$ 9,096