Acquisitions, Dispositions and Mortgage Repayments (Tables)

12 Months Ended

Dec. 31, 2011

Acquisitions and Dispositions and Mortgage Repayments [Abstract]

Asset Acquisitions

(Dollars in millions)	Date Acquired		Cash Consideration		Real Estate		Note Receivable Repayment			Mortgage Note Financing		Mortgage Notes Payable Assumed			Non- controlling interests		APIC		Other			Square Footage
Real estate acquisitions
Pennsylvania		4/28/11	$	1.9	$	1.9	$	—		$	—	$	—		$	—	$	—	$	—			—
Virginia		6/30/11		34.8		31.9		—			—		—			—		—		2.9			142,015
Virginia (1)		8/4/11		16.2		26.4		—			—		(12.5	)		—		—		2.3			87,816
Virginia (1)		8/4/11		28.3		43.8		—			—		(19.0	)		—		—		3.5			142,856
Virginia (1)		8/30/11		8.6		14.6		—			—		(7.5	)		—		—		1.5			59,240
Virginia (1)		9/30/11		8.7		15.3		—			—		(7.8	)		—		—		1.2			42,957
Virginia (1)		10/26/11		7.9		11.6		—			—		(4.8	)		—		—		1.1			41,882
Virginia (1)		10/26/11		4.7		6.6		—			—		(2.8	)		—		—		0.9			31,443
Pennsylvania		11/15/11		3.6		3.6		—			—		—			—		—		—			—
				114.7		155.7		—			—		(54.4	)		—		—		13.4			548,209
Purchase of noncontrolling interests				1.3		—		(3.5	)		—		—			3.6		1.5		(0.3	)		—
Mortgage note financings (2)
Iowa		1/3/11		40.0		—		—			40.0		—			—		—		—			—
Florida		2/3/11		2.7		—		—			2.7		—			—		—		—			—
Missouri (3)(4)		3/24/11		2.3		—		—			2.3		—			—		—		—			—
Missouri (4)		6/30/11		20.6		—		—			20.6		—			—		—		—			—
Oklahoma (4)		6/30/11		19.9		—		—			19.9		—			—		—		—			—
				85.5		—		—			85.5		—			—		—		—			—
			$	201.5	$	155.7	$	(3.5	)	$	85.5	$	(54.4	)	$	3.6	$	1.5	$	13.1			548,209

(1) The mortgage notes payable assumed in these acquisitions reflect fair value adjustments totaling $2.0 million recorded by the Company upon acquisition.

(2) Amounts in table include fundings through December 31, 2011.

(3) The loan was repaid in full in October 2011.

(4) These are construction mortgage notes and the amounts in the table include amounts funded since the acquisition date.

(Dollars in millions)	Dates Acquired		Cash Consideration		Real Estate		Mortgage Note Fundings		Mortgage Notes Payable Assumed			Other			Square Footage
Real estate acquisitions (1)
Iowa (2)		3/26/10	$	2.9	$	14.7	$	—	$	—		$	(11.8	)		68,534
Ohio		8/13/10		10.3		14.5		—		(4.2	)		—			73,331
Indiana		8/27/10		23.5		23.3		—		—			0.2			134,032
Colorado (3)		8/31/10		14.8		31.0		—		(15.7	)		(0.5	)		112,155
Texas		9/23/10, 12/29/10		71.6		75.8		—		(4.4	)		0.2			302,094
Colorado		12/17/10		19.1		18.4		—		—			0.7			80,125
Texas		12/29/10		134.0		133.8		—		—			0.2			311,710
				276.2		311.5		—		(24.3	)		(11.0	)		1,081,981
Mortgage note financings (4)
Iowa (5)		1/27/10		2.3		—		2.3		—			—			—
South Dakota (6)		7/26/10		10.6		—		11.2		—			(0.6	)		—
Texas		8/2/10		2.5		—		2.5		—			—			—
Iowa (7)		8/27/10		4.4		—		4.4		—			—			—
Iowa		10/29/10		0.3		—		0.3		—			—			—
Iowa		11/23/10		3.7		—		3.7		—			—			—
				23.8		—		24.4		—			(0.6	)		—
			$	300.0	$	311.5	$	24.4	$	(24.3	)	$	(11.6	)		1,081,981

(1) The Company expensed $1.2 million in transaction costs during 2010 related to these acquisitions.

(2) The Other column includes a $9.9 million mortgage note receivable that was repaid upon acquisition of the property.

(3) The mortgage note payable assumed amount includes a fair value adjustment of $0.5 million.

(4) Amounts in table include fundings through December 31, 2010.

(5) This mortgage note was acquired and subsequently repaid during 2010.

(6) This mortgage note was converted to construction in progress during 2011.

(7) This mortgage note was converted to land held for development during 2011.

Allocation of purchase price

	Estimated Fair Value (1)			Estimated Useful Life
	(In millions)			(In years)
Buildings	$	139.7			25.0-33.0
Land		5.5			—
Prepaid ground leases		12.8			94.2-94.5
Intangibles:
At-market lease intangibles		10.5			2.0-5.0
Above-market lease intangibles		0.3			0.9-4.7
Below-market lease intangibles		(0.1	)		2.7-6.3
Total intangibles		10.7
Accounts receivable and other assets acquired		0.3			—
Mortgage notes payable assumed, including fair value adjustments		(54.4	)		—
Accounts payable, accrued liabilities and other liabilities assumed		(0.5	)		—
Prorated rent, net of expenses paid		0.6			—
Total cash consideration	$	114.7

	Estimated Fair Value			Estimated Useful Life
	(In millions)			(In years)
Buildings	$	291.4			29.0 - 37.0
Prepaid ground lease		0.3			75.0
Intangibles:
At-market lease intangibles		20.1			3.0 - 16.4
Above-market lease intangibles		1.1			4.6 - 9.1
Below-market lease intangibles		(1.4	)		5.3 - 9.3
Below-market ground lease intangibles		0.5			75.0
Total intangibles		20.3
Accounts receivable and other assets assumed		1.4			—
Mortgage notes payable assumed, including fair value adjustment		(24.3	)		—
Mortgage notes payable repayments		(9.9	)		—
Accounts payable, accrued liabilities and other liabilities assumed		(3.4	)		—
Prorated rent, net of expenses paid		0.4			—
Total cash consideration	$	276.2

Asset Dispositions

(Dollars in millions)	Date Disposed		Net Proceeds		Net Real Estate Investment		Other (Including Receivables)		Mortgage Note Receivable			Gain/ Impairment			Square Footage
Real estate dispositions
Maryland		1/19/2011	$	3.4	$	3.5	$	—	$	—		$	(0.1	)		35,761
Florida		2/03/2011		0.4		3.1		—		(2.7	)		—			28,861
Florida		8/09/2011		1.2		2.8		—		—			(1.6	)		16,256
Massachusetts		12/12/2011		3.2		1.6		—		—			1.6			24,900
Massachusetts		12/12/2011		11.4		6.3		1.0		—			4.1			75,842
				19.6		17.3		1.0		(2.7	)		4.0			181,620
Mortgage note repayments (1)				17.2		—		—		17.2			1.4			—
			$	36.8	$	17.3	$	1.0	$	14.5		$	5.4			181,620

(1) Includes the recognition of a $1.4 million deferred gain from the sale of the building in 2006.

(Dollars in millions)	Date Disposed		Net Proceeds		Net Real Estate Investment		Other (Including Receivables)			Mortgage Notes Receivable		Gain		Square Footage
Real estate dispositions
Virginia		1/07/2010	$	19.6	$	16.0	$	0.9		$	—	$	2.7		222,045
Florida		4/16/2010		4.0		2.4		0.1			—		1.5		14,563
Florida		9/09/2010		9.7		5.0		0.6			—		4.1		25,000
Arkansas		10/22/2010		1.0		1.0		(0.1	)		—		0.1		11,963
Georgia		11/02/2010		0.2		0.9		(0.7	)		—		—		15,474
				34.5		25.3		0.8			—		8.4		289,045
Mortgage note repayments				8.5		—		—			8.5		—		—
			$	43.0	$	25.3	$	0.8		$	8.5	$	8.4		289,045