MARKETABLE SECURITIES (Continuous Unrealized Loss Position) (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months Estimated Fair Market Value, Total marketable securities	$ 102,729,000	$ 45,047,000
Less Than 12 Months Gross Unrealized Losses, Total marketable securities	(371,000)	(662,000)
12 Months or Longer Estimated Fair Market Value, Total marketable securities	25,401,000	191,443,000
12 Months or Longer Gross Unrealized Losses, Total marketable securities	(340,000)	(4,732,000)
Total Estimated Fair Market Value, Total marketable securities	128,130,000	236,490,000
Total Gross Unrealized Losses, Total marketable securities	(711,000)	(5,394,000)
Debt Securities, Available-for-sale, Allowance for Credit Loss	0	0
Corporate securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months Estimated Fair Market Value, Total marketable securities	102,729,000	45,047,000
Less Than 12 Months Gross Unrealized Losses, Total marketable securities	(371,000)	(662,000)
12 Months or Longer Estimated Fair Market Value, Total marketable securities	25,401,000	191,443,000
12 Months or Longer Gross Unrealized Losses, Total marketable securities	(340,000)	(4,732,000)
Total Estimated Fair Market Value, Total marketable securities	128,130,000	236,490,000
Total Gross Unrealized Losses, Total marketable securities	$ (711,000)	$ (5,394,000)