Organization (Tables)

12 Months Ended

Dec. 31, 2014

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Property Level Information by Geographic Region and Property Type, Property Square Feet

At December 31, 2014, our portfolio included the following (square feet in thousands):

	Number of Properties	Number of Buildings	Square Feet
CBD locations	40	53	21,892
Suburban locations	116	209	21,027
Total portfolio	156	262	42,919

Property level information by operating segment as of December 31, 2014 and 2013, excluding assets held for sale as of December 31, 2013, and for the years ended December 31, 2014, 2013 and 2012, is as follows (in thousands):

	As of December 31,
	2014	2013
Square feet (in thousands):
CBD properties	21,892	21,889
Suburban properties	21,027	21,026
Total properties(1)	42,919	42,915

(1) The change in total square feet from December 31, 2013 to 2014 is a result of remeasuring certain spaces.

	As of December 31,
	2014		2013
Investment in real estate properties, net of accumulated depreciation
CBD properties	$	2,966,926	$	3,001,397
Suburban properties	1,731,072		1,640,709
Total properties	$	4,697,998	$	4,642,106

	Year Ended December 31,
	2014		2013		2012
Rental income:
CBD properties	$	436,426	$	439,716	$	423,453
Suburban properties	255,273		323,546		351,147
Total properties	$	691,699	$	763,262	$	774,600
Tenant reimbursements and other income:
CBD properties	$	112,481	$	120,352	$	116,326
Suburban properties	57,677		69,415		70,161
Total properties	$	170,158	$	189,767	$	186,487
NOI:
CBD properties	$	289,141	$	294,306	$	290,810
Suburban properties	184,734		248,678		272,604
Total properties	$	473,875	$	542,984	$	563,414