REVENUE FROM CONTRACTS WITH CUSTOMERS (Contract Assets and Liabilities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Change in Contract with Customer, Liability [Roll Forward]
Beginning balance	$ 51,459
Revenue recognized in the current period from the amounts in the beginning balance	(49,937)
New deferrals, net of amounts recognized in the current period	68,814
Effects of foreign currency	284
Ending balance	70,620
Current liability	67,274	$ 51,459
Noncurrent liability	3,000
New deferrals recognized in connection with business acquisitions made in 2019	$ 11,000