Segment Information (Reconciliation of GAAP Net Income to NOI) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Net income	$ 6,290	$ 3,513
Asset and property management fee income	(4,300)	(1,900)
Depreciation	18,330	20,404
General and administrative – corporate	11,782	8,424
Management fee expense	6,945	0
General and administrative – joint ventures	0	809
Acquisition costs	12,081	0
Income tax expense	(2,243)	7
Gain on sale of real estate assets	(13,344)	0
Adjustments attributable to noncontrolling interests	71	0
NOI	63,009	66,646
Segment Reconciling Items
Segment Reporting Information [Line Items]
Asset and property management fee income	(8,240)	(1,869)
Depreciation	18,330	20,404
Amortization	6,721	7,461
General and administrative – corporate	11,782	8,424
Management fee expense	6,945	0
General and administrative – joint ventures	0	809
Acquisition costs	12,081	0
Net interest expense	9,713	12,094
Income tax expense	(2,243)	7
Adjustments included in income from unconsolidated joint ventures	14,903	15,803
Gain on sale of real estate assets	(13,344)	0
Adjustments attributable to noncontrolling interests	$ 71	$ 0