Note 7 - Investment and Advances in Real Estate Joint Ventures - Investment and Advances to Real Estate Joint Ventures - Income Statements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues, net	$ 1,727,684	$ 1,364,585	$ 1,057,893
Operating expenses	(1,177,399)	(971,140)	(731,765)
Depreciation and amortization	(505,000)	(395,320)	(288,955)
Interest expense	(226,823)	(204,133)	(186,904)
Other expense, net	28,829	19,810	4,119
Net income	125,976	844,059	1,000,833
Impairment charges	(21,958)	(3,597)	(6,624)
Net income	114,534	849,696	1,002,877
KIR [Member]
Revenues, net	182,500	186,600	173,900
Operating expenses	(48,200)	(51,300)	(49,500)
Depreciation and amortization	(39,400)	(40,300)	(36,900)
Gain on sale of properties	76,200	0	0
Interest expense	(15,500)	(18,100)	(23,800)
Other expense, net	(1,200)	(2,100)	(1,600)
Net income	154,400	74,800	62,100
Excluding KIR [Member]
Revenues, net	395,200	340,300	282,400
Operating expenses	(126,900)	(111,700)	(101,900)
Depreciation and amortization	(119,000)	(97,200)	(75,000)
Gain on sale of properties	24,700	61,500	200
Interest expense	(38,600)	(27,600)	(31,200)
Other expense, net	(6,200)	(900)	(10,800)
Impairment charges	(21,100)	(23,500)	(4,400)
Net income	$ 108,100	$ 140,900	$ 59,300