SHAREHOLDERS' EQUITY (Treasury Shares) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Treasury Shares [Line Items]
Total shares (in shares)	150	157
Total cost	$ 8,492	$ 9,003
Average price per share (in usd per share)	$ 56.43	$ 57.17
In the open market
Treasury Shares [Line Items]
Total shares (in shares)	0	0
Total cost	$ 0	$ 0
Average price per share (in usd per share)	$ 0	$ 0
From employees
Treasury Shares [Line Items]
Total shares (in shares)	150	157
Total cost	$ 8,492	$ 9,003
Average price per share (in usd per share)	$ 56.43	$ 57.17