Reportable Segment (Tables)

6 Months Ended

Jun. 30, 2011

Reportable Segments [Abstract]

Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations

	June 30,						June 30,
	2011			2010			2011			2010
Reportable apartment home segment rental income
Same Communities
Western Region	$	54,323		$	52,432		$	107,459		$	104,404
Mid-Atlantic Region		39,105			37,622			77,547			74,636
Southeastern Region		32,468			31,484			64,664			62,991
Southwestern Region		15,196			14,696			30,249			29,454
Non-Mature communities/Other		36,126			17,687			67,801			34,065
Total segment and consolidated rental income	$	177,218		$	153,921		$	347,720		$	305,550
Reportable apartment home segment NOI
Same Communities
Western Region	$	38,078		$	36,216		$	74,339		$	71,764
Mid-Atlantic Region		26,883			25,820			53,049			50,667
Southeastern Region		20,167			19,359			40,280			39,030
Southwestern Region		9,402			8,585			18,250			17,430
Non-Mature communities/Other		23,540			10,274			42,949			19,386
Total segment and consolidated NOI		118,070			100,254			228,867			198,277
Reconciling items:
Non-property income		2,855			2,056			7,391			5,376
Property management		(4,873	)		(4,233	)		(9,562	)		(8,403	)
Other operating expenses		(1,544	)		(1,457	)		(3,001	)		(2,942	)
Depreciation and amortization		(91,161	)		(73,726	)		(175,276	)		(145,933	)
Interest		(37,844	)		(37,945	)		(78,563	)		(74,811	)
General and administrative		(12,918	)		(10,293	)		(23,593	)		(19,933	)
Other depreciation and amortization		(986	)		(1,308	)		(2,029	)		(2,531	)
Loss from unconsolidated entities		(1,348	)		(1,185	)		(2,680	)		(1,922	)
Redeemable non-controlling interests in OP		(221	)		1,064			611			2,069
Non-controlling interests		(37	)		(45	)		(88	)		(80	)
Net gain on sale of depreciable property		44,658			197			44,699			156
Net income/(loss) attributable to UDR	$	14,651		$	(26,621	)	$	(13,224	)	$	(50,677	)

Details of assets of UDR's reportable segments

	June 30,			December 31,
Reportable apartment home segment assets:	2011			2010
Same communities:
Western Region	$	2,317,600		$	2,308,491
Mid-Atlantic Region		1,269,193			1,264,314
Southeastern Region		1,059,639			1,054,130
Southwestern Region		555,424			553,176
Non-mature communities/Other		2,096,950			1,701,236
Total segment assets		7,298,806			6,881,347
Accumulated depreciation		(1,726,258	)		(1,638,326	)
Total segment assets — net book value		5,572,548			5,243,021
Reconciling items:
Cash and cash equivalents		21,634			9,486
Marketable securities		—			3,866
Restricted cash		20,220			15,447
Deferred financing costs, net		24,747			27,267
Notes receivable		7,800			7,800
Investment in unconsolidated joint ventures		177,404			148,057
Other assets		137,424			74,596
Total consolidated assets	$	5,961,777		$	5,529,540