ACCUMULATED OTHER COMPREHENSIVE LOSS (Amounts Reclassified out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Unrealized losses on available-for-sale securities:
Equity in income of affiliated companies	$ 64,359	$ (16,523)	$ 97,378	$ (5,626)
Income (loss) from equity method investments	5,205	8,015	10,316	16,085
Interest expense	8,881	17,443	20,890	34,976
Other income/(expense)	143	839	(13,289)	1,875
Total reclassified out of AOCL, before tax	1,645	1,733	2,781	3,554
Interest Rate Swap [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized losses on cash flow hedges [Member]
Unrealized losses on available-for-sale securities:
Equity in income of affiliated companies	228	1,457	388	3,097
Interest expense	1,417	219	2,312	359
Interest Rate Cap/Collar [Member]
Unrealized losses on available-for-sale securities:
Total reclassified out of AOCL, before tax	0	0	1,352	0
Interest Rate Cap/Collar [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Unrealized losses on available-for-sale securities:
Interest expense	0	0	81	0
Interest Rate Cap/Collar [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized losses on cash flow hedges [Member]
Unrealized losses on available-for-sale securities:
Interest expense	$ 0	$ 57	$ 0	$ 98