SHAREHOLDERS' EQUITY (Treasury Shares) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Treasury Shares [Line Items]
Total shares (in shares)	2	1	155	165
Total cost	$ 84	$ 31	$ 8,685	$ 9,445
Average price per share (in usd per share)	$ 46.85	$ 61.23	$ 55.94	$ 57.23
In the open market:
Treasury Shares [Line Items]
Total shares (in shares)	0	0	0	0
Total cost	$ 0	$ 0	$ 0	$ 0
Average price per share (in usd per share)	$ 0	$ 0	$ 0	$ 0
From employees
Treasury Shares [Line Items]
Total shares (in shares)	2	1	155	165
Total cost	$ 84	$ 31	$ 8,685	$ 9,445
Average price per share (in usd per share)	$ 46.85	$ 61.23	$ 55.94	$ 57.23