Segment Information (Tables)

3 Months Ended

Mar. 31, 2017

Segment Reporting, Measurement Disclosures [Abstract]

Schedule of Segment Reporting Information, by Segment, Revenue and Net Operating Income [Table Text Block]

The operating information by reportable segment is as follows (in thousands):

		Three Months
		Ended March 31,
		2017			2016
Operating revenue
	Carolinas/Richmond	$	18,056		$	15,760
	Chicago/Minneapolis	15,875			21,539
	Florida	14,248			29,318
	Houston	14,774			14,766
	Lehigh/Central PA	41,535			34,243
	Philadelphia	11,436			10,355
	Southeastern PA	14,615			25,883
	United Kingdom	3,168			3,552
	Other	30,372			34,998
Segment-level operating revenue		164,079			190,414
Reconciliation to total operating revenues
	Development service fee income	11,485			—
	Other	(198		)	(274		)
Total operating revenue		$	175,366		$	190,140
SNOI
	Carolinas/Richmond	$	12,982		$	10,840
	Chicago/Minneapolis	9,349			11,371
	Florida	9,511			18,047
	Houston	6,801			8,833
	Lehigh/Central PA	29,578			24,202
	Philadelphia	8,759			7,097
	Southeastern PA	8,113			13,751
	United Kingdom	1,858			2,405
	Other	20,256			22,825
SNOI		107,207			119,371
Reconciliation to net income
	Interest expense	(22,343		)	(31,412		)
	Depreciation/amortization expense (1)	(33,193		)	(39,798		)
	Gain on property dispositions	807			20,521
	Equity in earnings of unconsolidated joint ventures	5,731			4,914
	General and administrative expense (1)	(12,254		)	(14,539		)
	Income taxes (1)	(280		)	(570		)
	Other	(1,431		)	576
Net income		$	44,244		$	59,063

(1) Excludes costs which are included in determining SNOI.

Assets by Segment and Reconciliation to Consolidated[Table Text Block]

The Company's total assets by reportable segment as of March 31, 2017 and December 31, 2016 is as follows (in thousands):

	March 31, 2017		December 31, 2016
Carolinas/Richmond	$	510,910	$	503,920
Chicago/Minnesota	613,095		616,298
Florida	515,539		514,431
Houston	528,071		530,438
Lehigh/Central PA	1,340,842		1,311,815
Philadelphia	585,797		557,510
Southeastern PA	265,353		262,155
United Kingdom	210,761		189,766
Other	1,428,459		1,403,431
Segment-level total assets	5,998,827		5,889,764
Corporate Other	85,074		103,049
Total assets	$	6,083,901	$	5,992,813