REVENUES FROM CONTRACTS WITH CUSTOMERS (Schedule of Changes in Contract Assets and Liabilities) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)
Contract Asset
Contract asset, Beginning of period	$ 8,680
Transferred to trade receivable of contract asset included in beginning of the year contract asset	(8,680)
Contract asset, net of transferred to trade receivables on contracts during the period	7,430
Contract asset, End of Period	7,430
Contract Liability
Contract liability, Beginning of Period	11,946
Recognition of revenue included in beginning of year contract liability	(3,925)
Contract liability, net of revenue recognized on contracts during the period	3,856
Foreign currency translation	84
Contract liability, End of Period	$ 11,961