Real Estate Assets Real Estate Assets Pro Forma (Details) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2015 USD ($) $ / shares
Business Acquisition, Pro Forma Information [Abstract]
Pro forma, assumption date of acquisition	Jan. 01, 2014
Pro Forma 2015 Acquisitions [Member]
Business Combination, Purchase Price Allocation [Abstract]
Real estate assets	$ 275,639
Acquisition-related intangible assets (in deferred leasing costs)	23,722
Acquisition-related below market lease liabilities (in accounts payable, accrued expenses and other liabilities)	(9,076)
Total allocation	290,285
Business Acquisition, Pro Forma Information [Abstract]
Pro forma revenues	626,067
Pro forma net income	103,485
Pro forma net income available to common stockholders	$ 96,797
Pro forma earnings per share - basic \| $ / shares	$ 1.03
Pro forma earnings per share - diluted \| $ / shares	$ 1.02
Revenues recorded due to acquisitions	$ 7,300
Net loss recorded due to acquisitions	$ (1,200)

The date the transaction is assumed to be acquired with respect to pro forma disclosure.

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The pro forma net income (loss) available to common stockholders for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

No definition available.

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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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-Publisher FASB
-Name Accounting Standards Codification
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The amount of identifiable intangible assets recognized as of the acquisition date.

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-Name Accounting Standards Codification
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-SubTopic 10
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Amount of liabilities assumed at the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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