Consolidated and Combined Statements of Operations - USD ($) shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
REVENUE
Property rentals	$ 499,835,000	$ 436,625,000	$ 401,595,000
Reimbursements from Tenants	39,290,000	37,985,000	37,661,000
Third-party real estate services, including reimbursements	98,699,000	63,236,000	33,882,000
Other income	6,358,000	5,167,000	5,381,000
Total revenue	644,182,000	543,013,000	478,519,000
EXPENSES
Depreciation and amortization	211,436,000	161,659,000	133,343,000
Property operating	148,081,000	118,836,000	100,304,000
Real estate taxes	71,054,000	66,434,000	57,784,000
General and administrative:
Corporate and other	33,728,000	39,350,000	48,753,000
Third-party real estate services	89,826,000	51,919,000	19,066,000
Share-based compensation related to Formation Transaction	36,030,000	29,251,000	0
Transaction and other costs	27,706,000	127,739,000	6,476,000
Total Expenses	617,861,000	595,188,000	365,726,000
Income (loss) from unconsolidated real estate ventures, net	39,409,000	(4,143,000)	(947,000)
Interest and other income (loss), net	15,168,000	1,788,000	2,992,000
Interest expense	(74,447,000)	(58,141,000)	(51,781,000)
Gains (Losses) on Sales of Investment Real Estate	52,183,000	0	0
Loss on extinguishment of debt	(5,153,000)	(701,000)	0
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Bargain Purchase, Reduction Of Gain	(7,606,000)	24,376,000	0
Total Other Income (Expense)	19,554,000	(36,821,000)	(49,736,000)
INCOME (LOSS) BEFORE INCOME TAX BENEFIT	45,875,000	(88,996,000)	63,057,000
Income tax benefit	738,000	9,912,000	(1,083,000)
NET INCOME (LOSS)	46,613,000	(79,084,000)	61,974,000
Net (income) loss attributable to redeemable noncontrolling interests	(6,710,000)	7,328,000	0
Net loss attributable to noncontrolling interests	21,000	3,000	0
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ 39,924,000	$ (71,753,000)	$ 61,974,000
EARNINGS (LOSS) PER COMMON SHARE:
Earnings Per Share, Basic	$ 0.31	$ (0.70)	$ 0.62
Earnings Per Share, Diluted	$ 0.31	$ (0.70)	$ 0.62
WEIGHTED AVERAGE NUMBER OF COMMON SHARES OUTSTANDING - basic and diluted (in shares)	119,176	105,359	100,571
Weighted Average Number of Shares Outstanding, Diluted	119,176	105,359	100,571