CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net income	$ 79,383	$ 46,909	$ 33,715
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	63,079	43,332	33,281
Non-cash interest income adjustments	626	325	79
Amortization of deferred financing costs	5,143	4,045	3,280
Stock-based compensation expense	6,123	9,851	7,819
Amortization of debt discount (premium)	103	(10)	(671)
Loss on extinguishment of debt	0	1,576	859
Straight-line rental income adjustments	(24,320)	(19,821)	(14,709)
Provision for doubtful accounts and loan losses	12,842	3,594	0
Change in fair value of contingent consideration	(1,550)	(1,560)	200
Gain on consolidation	(710)	0	0
Net loss (gain) on sales of real estate	161	(3,914)	0
Changes in operating assets and liabilities:
Prepaid expenses and other assets	(22,794)	(7,993)	(3,459)
Accounts payable and accrued liabilities	6,977	12,635	5,430
Restricted cash	(3,962)	(3,632)	(3,725)
Net cash provided by operating activities	121,101	85,337	62,099
Cash flows from investing activities:
Acquisitions of real estate	(461,330)	(771,479)	(125,955)
Origination and fundings of loans receivable	(49,687)	(66,397)	(165,960)
Origination and fundings of preferred equity investments	(12,804)	(15,486)	(7,038)
Additions to real estate	(3,689)	(1,471)	(764)
Repayment of loans receivable	5,803	1,097	0
Release of contingent consideration held in escrow	5,240	0	0
Net proceeds from sale of real estate	27,241	27,264	2,208
Net cash (used in) provided by in investing activities	(489,226)	(826,472)	(297,509)
Cash flows from financing activities:
Proceeds from issuance of senior unsecured notes	0	499,250	200,000
Principal payments on senior unsecured notes	0	(211,250)	(113,750)
Net proceeds from revolving credit facility	187,000	132,500	43,000
Proceeds from term loan	73,242	0	0
Proceeds from mortgage notes	28,735	57,703	0
Principal payments on mortgage notes	(3,132)	(89,110)	(10,994)
Payments of deferred financing costs	(1,452)	(19,131)	(8,954)
Payment of contingent consideration	0	0	(1,300)
Contributions by noncontrolling interests	179	0	0
Issuance of preferred stock	0	0	138,249
Issuance of common stock	139,403	510,147	34,517
Dividends paid on common and preferred stock	(109,897)	(81,489)	(58,151)
Net cash provided by (used in) financing activities	314,078	798,620	222,617
Net (decrease) increase in cash and cash equivalents	(54,047)	57,485	(12,793)
Effect of foreign currency translation on cash and cash equivalents	(312)	0	0
Cash and cash equivalents, beginning of period	61,793	4,308	17,101
Cash and cash equivalents, end of period	7,434	61,793	4,308
Supplemental disclosure of cash flow information:
Interest paid	53,875	34,468	38,541
Supplemental disclosure of non-cash transactions:
Assumption of mortgage indebtedness	30,456	14,102	0
Increase in real estate investments due to variable interest consolidation	10,700	0	0
Decrease in loans receivable and preferred equity due to variable interest consolidation	(8,615)	0	0
Repayment of preferred equity investments	0	6,949	0
Decrease in loans receivables/increase in real estate	$ 0	$ 16,832	$ 0