Segment Information (Tables)

6 Months Ended

Jun. 30, 2013

Segment Information

Property level information by geographic segment and property type, property square feet

As of June 30, 2013

	As of June 30, 2012
		CBD	Suburban	Industrial &		CBD	Suburban	Industrial &
		Office	Office	Other	Totals	Office	Office	Other	Totals
Property square feet (in thousands):
Metro Chicago, IL		3,601	1,166	104	4,871	3,592	1,164	104	4,860
Oahu, HI		—	—	17,914	17,914	—	—	17,876	17,876
Metro Philadelphia, PA		4,597	255	—	4,852	4,596	255	—	4,851
Other Markets		13,853	18,927	12,300	45,080	12,306	17,244	10,733	40,283
Totals		22,051	20,348	30,318	72,717	20,494	18,663	28,713	67,870

Property level information, excluding discontinued operations, property rental income and net operating income

	Three Months Ended June 30, 2013								Three Months Ended June 30, 2012
	CBD		Suburban		Industrial &				CBD		Suburban		Industrial &
	Office		Office		Other		Totals		Office		Office		Other		Totals
Property rental income:
Metro Chicago, IL	$	25,747	$	6,200	$	111	$	32,058	$	26,472	$	6,748	$	111	$	33,331
Oahu, HI	—		—		20,976		20,976		—		—		18,298		18,298
Metro Philadelphia, PA	25,503		893		—		26,396		29,287		940		—		30,227
Other Markets	88,555		82,684		24,097		195,336		77,492		69,453		20,996		167,941
Totals	$	139,805	$	89,777	$	45,184	$	274,766	$	133,251	$	77,141	$	39,405	$	249,797
Property NOI:
Metro Chicago, IL	$	13,411	$	3,155	$	102	$	16,668	$	13,909	$	3,660	$	103	$	17,672
Oahu, HI	—		—		16,624		16,624		—		—		14,171		14,171
Metro Philadelphia, PA	12,905		249		—		13,154		16,193		227		—		16,420
Other Markets	48,810		51,307		18,449		118,566		42,265		41,273		14,962		98,500
Totals	$	75,126	$	54,711	$	35,175	$	165,012	$	72,367	$	45,160	$	29,236	$	146,763

	Six Months Ended June 30, 2013								Six Months Ended June 30, 2012
	CBD		Suburban		Industrial &				CBD		Suburban		Industrial &
	Office		Office		Other		Totals		Office		Office		Other		Totals
Property rental income:
Metro Chicago, IL	$	50,896	$	12,791	$	222	$	63,909	$	51,047	$	12,611	$	222	$	63,880
Oahu, HI	—		—		42,187		42,187		—		—		38,193		38,193
Metro Philadelphia, PA	54,634		1,768		—		56,402		58,587		1,784		—		60,371
Other Markets	177,026		162,351		47,939		387,316		151,756		137,889		41,086		330,731
Totals	$	282,556	$	176,910	$	90,348	$	549,814	$	261,390	$	152,284	$	79,501	$	493,175
Property NOI:
Metro Chicago, IL	$	25,680	$	6,825	$	204	$	32,709	$	26,287	$	6,623	$	207	$	33,117
Oahu, HI	—		—		33,361		33,361		—		—		29,685		29,685
Metro Philadelphia, PA	28,701		454		—		29,155		31,777		430		—		32,207
Other Markets	99,438		99,336		36,402		235,176		86,278		82,246		29,372		197,896
Totals	$	153,819	$	106,615	$	69,967	$	330,401	$	144,342	$	89,299	$	59,264	$	292,905

Reconciliation of NOI to net income

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
Rental income	$	274,766		$	249,797		$	549,814		$	493,175
Operating expenses	(109,754		)	(103,034		)	(219,413		)	(200,270		)
Property net operating income (NOI)	$	165,012		$	146,763		$	330,401		$	292,905
Property NOI	$	165,012		$	146,763		$	330,401		$	292,905
Depreciation and amortization	(67,389		)	(60,433		)	(133,912		)	(118,452		)
General and administrative	(21,653		)	(12,595		)	(38,919		)	(24,131		)
Acquisition related costs	(145		)	(1,434		)	(773		)	(3,936		)
Operating income	75,825			72,301			156,797			146,386
Interest and other income	250			360			708			645
Interest expense	(43,762		)	(50,237		)	(96,106		)	(99,343		)
Loss on early extinguishment of debt	—			(1,608		)	(60,027		)	(1,675		)
Equity in earnings of investees	159			2,829			4,421			5,787
Gain on sale of equity investment	—			—			66,293			—
Income from continuing operations before income tax expense	32,472			23,645			72,086			51,800
Income tax expense	(754		)	(92		)	(1,742		)	(584		)
Income from continuing operations	31,718			23,553			70,344			51,216
Loss from discontinued operations	(311		)	(3,317		)	(2,223		)	(6,406		)
Loss on asset impairment from discontinued operations	(4,589		)	—			(8,535		)	—
Gain on sale of properties from discontinued operations	2,099			350			3,359			350
Income before gain on sale of properties	28,917			20,586			62,945			45,160
Gain on sale of properties	—			—			1,596			—
Net income	$	28,917		$	20,586		$	64,541		$	45,160