CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net income	$ 279,115	$ 158,365	$ 70,205
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	191,379	113,882	68,472
Amortization of above and below market lease intangibles, net	7,701	(912)	0
Non-cash interest income adjustments	(2,300)	(769)	582
Non-cash interest expense	10,137	7,776	5,678
Stock-based compensation expense	7,648	8,359	7,496
Loss on extinguishment of debt	874	553	556
Straight-line rental income adjustments	(44,144)	(29,440)	(21,984)
Provision for doubtful accounts, straight-line rental income and loan losses	39,075	17,113	5,543
Change in fair value of contingent consideration	0	(426)	(1,526)
Net (gain) loss on sales of real estate	(128,198)	(52,029)	6,122
Impairment of real estate	1,413	1,326	29,811
Loss from unconsolidated joint venture	5,431	0	0
Distributions of earnings from unconsolidated joint venture	8,910	0	0
Changes in operating assets and liabilities:
Accounts receivable, prepaid expenses and other assets, net	(6,753)	(16,811)	(2,339)
Accounts payable and accrued liabilities	(11,745)	(71,198)	7,312
Net cash provided by operating activities	358,543	135,789	175,928
Cash flows from investing activities:
Acquisition of real estate	(261,511)	(419,905)	(153,579)
Cash received in CCP Merger	0	77,859	0
Origination and fundings of loans receivable	(50,731)	(17,239)	(9,675)
Origination and fundings of preferred equity investments	(5,313)	(2,749)	(7,348)
Additions to real estate	(27,697)	(6,954)	(1,003)
Repayments of loans receivable	51,789	32,430	215,962
Repayments of preferred equity investments	6,870	3,755	0
Investment in unconsolidated joint venture	(354,461)	0	0
Net proceeds from sales of real estate	382,560	150,243	98,006
Net cash (used in) provided by investing activities	(258,494)	(182,560)	142,363
Cash flows from financing activities:
Net repayments of revolving credit facility	(17,000)		(229,000)
Net borrowings from revolving credit facility		253,000
Proceeds from term loans	0	181,000	69,360
Principal payments on secured debt	(140,338)	(4,145)	(14,768)
Payments of deferred financing costs	(352)	(15,337)	(5,937)
Payment of contingent consideration	0	(382)	0
Distributions to noncontrolling interests	(142)	(30)	0
Preferred stock redemption	(143,750)	0	0
Issuance of common stock, net	(499)	366,800	(1,289)
Dividends paid on common and preferred stock	(325,220)	(182,089)	(119,264)
Net cash (used in) provided by financing activities	(627,301)	598,817	(300,898)
Net (decrease) increase in cash, cash equivalents and restricted cash	(527,252)	552,046	17,393
Effect of foreign currency translation on cash, cash equivalents and restricted cash	(539)	738	25
Cash, cash equivalents and restricted cash, beginning of period	587,449	34,665	17,247
Cash, cash equivalents and restricted cash, end of period	59,658	587,449	34,665
Supplemental disclosure of cash flow information:
Interest paid	137,668	69,686	59,234
Income taxes paid	1,800	714	854
Supplemental disclosure of non-cash investing and financing activities:
Acquisition of business in CCP Merger (see Note 3)	0	3,726,092	0
Assumption of indebtedness in CCP Merger	0	(1,751,373)	0
Stock exchanged in CCP Merger	0	(2,052,578)	0
Real estate acquired through loan receivable foreclosure	0	19,096	10,100
Decrease in loans receivable and other investments due to acquisition of real estate	$ 0	$ (6,913)	$ 0