BUSINESS AND SEGMENT REPORTING (Reconciliation of Assets of Segments to Consolidated Amounts) (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Segment Reporting Information [Line Items]
Adjusted total assets	$ 2,407,010		$ 2,316,053
Cash and cash equivalents	103,309	$ 126,760	138,976
Short-term investments	50,000	60,000	75,000
Other unallocated amounts	27,527		30,993
Total assets	2,587,846	$ 2,521,819	2,561,022
Other Segments [Member]
Segment Reporting Information [Line Items]
Adjusted total assets	$ 0		$ 0