Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues:
Total Revenues	$ 186,637	$ 179,915	$ 376,187	$ 373,813
Expenses:
Rental property operating expenses	63,716	61,621	130,111	126,159
Reimbursed expenses	398	322	766	843
General and administrative expenses	7,313	8,543	14,046	14,195
Interest expense	16,656	13,993	33,864	29,897
Depreciation and amortization	71,456	72,868	142,326	144,482
Transaction costs	0	63	0	428
Other	824	552	1,414	1,118
Total costs and expenses	160,363	157,962	322,527	317,122
Income from unconsolidated joint ventures	1,795	1,715	3,698	5,140
Gain (loss) on sales of investments in unconsolidated joint ventures	0	(231)	39	45,999
Gain (loss) on investment property transactions	(9)	(201)	(26)	90,715
Net income	28,060	23,236	57,371	198,545
Net loss (income) attributable to noncontrolling interests	93	(135)	(108)	(501)
Net income available to common stockholders	$ 28,153	$ 23,101	$ 57,263	$ 198,044
Net income per common share — basic (in usd per share)	$ 0.19	$ 0.16	$ 0.39	$ 1.34
Net income per common share — diluted (in usd per share)	$ 0.19	$ 0.16	$ 0.39	$ 1.34
Weighted average shares — basic (in shares)	148,665	148,548	148,644	147,986
Weighted average shares — diluted (in shares)	148,740	148,580	148,716	148,570
Rental property revenues
Revenues:
Total Revenues	$ 181,766	$ 175,099	$ 366,573	$ 364,228
Fee income
Revenues:
Total Revenues	4,803	4,690	9,332	9,422
Other
Revenues:
Total Revenues	$ 68	$ 126	$ 282	$ 163