SHAREHOLDERS' EQUITY (Treasury Shares) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Treasury Shares [Line Items]
Total shares (in shares)	3	7	153	164
Total cost	$ 110	$ 411	$ 8,602	$ 9,414
Average price per share (in usd per share)	$ 36.77	$ 58.34	$ 56.05	$ 57.22
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)	3	7	153	164
Total cost	$ 110	$ 411	$ 8,602	$ 9,414
Average price per share (in usd per share)	$ 36.77	$ 58.34	$ 56.05	$ 57.22