CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
REVENUES:
Rental income	$ 320,093	$ 267,922
Joint venture management and other fees	$ 1,388	$ 2,751
Type of revenue	udr:ManagementAndOtherFeesMember	udr:ManagementAndOtherFeesMember
Total revenues	$ 321,481	$ 270,673
OPERATING EXPENSES:
Property operating and maintenance	49,483	41,939
Real estate taxes and insurance	45,145	36,300
Property management	9,203	7,703
Other operating expenses	4,966	5,646
Real estate depreciation and amortization	155,476	112,468
General and administrative	14,978	12,467
Casualty-related charges/(recoveries), net	1,251
Other depreciation and amortization	2,025	1,656
Total operating expenses	282,527	218,179
Operating income	38,954	52,494
Income/(loss) from unconsolidated entities	3,367	49
Interest expense	(39,317)	(33,542)
Interest income and other income/(expense), net	2,700	9,813
Income/(loss) before income taxes	5,704	28,814
Tax (provision)/benefit, net	(164)	(2,212)
Net income/(loss)	5,540	26,602
Net (income)/loss attributable to redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership	(313)	(2,057)
Net (income)/loss attributable to noncontrolling interests	(6)	(42)
Net income/(loss) attributable to UDR, Inc.	5,221	24,503
Distributions to preferred stockholders - Series E (Convertible)	(1,066)	(1,011)
Net income/(loss) attributable to common stockholders	$ 4,155	$ 23,492
Income/(loss) per weighted average common share - basic	$ 0.01	$ 0.08
Income/(loss) per weighted average common share - diluted	$ 0.01	$ 0.08
Weighted average number of common shares outstanding - Basic	294,457	277,002
Weighted average number of common shares outstanding - diluted	295,160	277,557