REVENUE FROM CONTRACTS WITH CUSTOMERS , CONTRACT ASSETS AND LIABILITIES (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Change in Contract with Customer, Liability [Roll Forward]
Beginning balance	$ 70,620
Revenue recognized in the current period from the amounts in the beginning balance	(38,354)
New deferrals, net of amounts recognized in the current period	56,602
Effects of foreign currency	(824)
Ending balance	88,044
Current liability	84,717	$ 67,274
Noncurrent liability	$ 3,000