Absolute Total Shareholder Return Reduced on a Linear Basis, Percent

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- Definition

Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount, Hypothetical Bonus

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Amount of Underperformance of SNL Equity REIT Index, Percent

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Amount Total Shareholder Return Exceeds Simple Annual Total Shareholder Return, Percent

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Amount Total Shareholder Return Exceeds SNL Equity REIT Index, Percent

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Award Performance Period

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Maximum Share Value Authorized Under Plan

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Simple Annual Total Shareholder Return, Percent

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Underperformance of SNL Equity REIT Index per Year, Percent

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Payment Per Share

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Forfeiture Adjustment as Percent of Total Cost

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Participation Interests Remaining, Percent

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Performance Based Award, Total

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Performance Measurement, Total Shareholder Return, Percent

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No definition available.

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- Definition

Simple Total Shareholder Return Reduced on a Linear Basis, Percent

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No definition available.

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- Definition

This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation".

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 35

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-Name Accounting Standards Codification

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-Section 55

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements.

+ References

No definition available.

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- Definition

Represents the compensation cost capitalized during the period arising from equity-based compensation arrangements (for example, shares of stock, units, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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-SubTopic 10

-Section 50

-Paragraph 2

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References

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-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(2)(ii)

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(2)(iv)

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Net number of non-option equity instruments granted to participants.

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-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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-Subparagraph (c)(1)(iv)(1)

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Equity - Outperformance Program (Details) - USD ($)					6 Months Ended		12 Months Ended
Equity - Outperformance Program (Details) - USD ($)	Jan. 02, 2015	Jan. 02, 2014	Jan. 02, 2013	Jan. 02, 2012	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award
Performance period					3 years
Amortization of stock-based compensation					$ 4,363,000		$ 7,979,000
General and Administrative Expense
Share-based Compensation Arrangement by Share-based Payment Award
Share-based compensation expense					4,200,000	$ 3,300,000
Deferred Leasing Costs and Lease Intatngibles, Net
Share-based Compensation Arrangement by Share-based Payment Award
Share-based compensation expense					200,000	200,000
Additional Paid in Capital
Share-based Compensation Arrangement by Share-based Payment Award
Amortization of stock-based compensation					$ 4,363,000	$ 3,500,000	7,979,000
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award
Award vesting period					2 years
2012 Outperformance Program
Share-based Compensation Arrangement by Share-based Payment Award
Maximum share value authorized under plan					$ 10,000,000
Performance period					3 years
Percentage amount TSR exceeds simple annual TSR					4.00%
Simple annual TSR					9.00%
Percent TSR exceeds SNL Equity REIT index					4.00%
Percent of underperformance of SNL Equity REIT index					4.00%
Underperformance of SNL Equity REIT index per year					3.00%
Award vesting period					2 years
Participation interest outstanding					75.00%
Stock settled awards				$ 2,620,000
Forfeiture adjustment as percent of total cost				6.00%
OPP, fair value									$ 3,490,000
Risk free interest rate				0.40%
Expected dividend payment per share				$ 1.62
2012 Outperformance Program \| The Company
Share-based Compensation Arrangement by Share-based Payment Award
Expected volatility rate				36.00%
2012 Outperformance Program \| SNL Equity REIT Index
Share-based Compensation Arrangement by Share-based Payment Award
Expected volatility rate				35.00%
2012 Outperformance Program \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award
Absolute TSR reduced on a linear basis					100.00%
Simple TSR reduced on a linear basis					7.00%
2012 Outperformance Program \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award
Absolute TSR reduced on a linear basis					0.00%
Simple TSR reduced on a linear basis					0.00%
2012 Outperformance Program \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award
Shares granted under OPP					125,475
2012 Outperformance Program \| Common Units
Share-based Compensation Arrangement by Share-based Payment Award
Shares granted under OPP					125,477
2013 Outperformance Program
Share-based Compensation Arrangement by Share-based Payment Award
Maximum share value authorized under plan					$ 11,000,000
Performance period					3 years
Percentage amount TSR exceeds simple annual TSR					4.00%
Simple annual TSR					9.00%
Percent TSR exceeds SNL Equity REIT index					4.00%
Percent of underperformance of SNL Equity REIT index					4.00%
Underperformance of SNL Equity REIT index per year					3.00%
Award vesting period					2 years
Stock settled awards			$ 3,520,000
Forfeiture adjustment as percent of total cost			6.00%
OPP, fair value								$ 4,140,000
Risk free interest rate			0.38%
Expected dividend payment per share			$ 1.50
2013 Outperformance Program \| The Company
Share-based Compensation Arrangement by Share-based Payment Award
Expected volatility rate			33.00%
2013 Outperformance Program \| SNL Equity REIT Index
Share-based Compensation Arrangement by Share-based Payment Award
Expected volatility rate			25.00%
2013 Outperformance Program \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award
Absolute TSR reduced on a linear basis					100.00%
Simple TSR reduced on a linear basis					7.00%
Hypothetical bonus pool for stock settled award					$ 4,000,000
2013 Outperformance Program \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award
Absolute TSR reduced on a linear basis					0.00%
Simple TSR reduced on a linear basis					0.00%
Hypothetical bonus pool for stock settled award					$ 2,000,000
2014 Outperformance Program
Share-based Compensation Arrangement by Share-based Payment Award
Maximum share value authorized under plan					12,000,000
Target bonus pool					$ 2,400,000
Simple annual TSR					10.50%
Percentage amount TSR exceeds simple annual TSR					4.00%
Simple annual TSR					9.00%
Percent TSR exceeds SNL Equity REIT index					4.00%
Percent of underperformance of SNL Equity REIT index					4.00%
Underperformance of SNL Equity REIT index per year					3.00%
Stock settled awards		$ 3,210,000
Forfeiture adjustment as percent of total cost		10.00%
OPP, fair value							$ 3,210,000
Risk free interest rate		0.77%
Expected dividend payment per share		$ 1.50
2014 Outperformance Program \| The Company
Share-based Compensation Arrangement by Share-based Payment Award
Expected volatility rate		28.00%
2014 Outperformance Program \| SNL Equity REIT Index
Share-based Compensation Arrangement by Share-based Payment Award
Expected volatility rate		26.00%
2014 Outperformance Program \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award
Absolute TSR reduced on a linear basis					100.00%
Simple TSR reduced on a linear basis					7.00%
2014 Outperformance Program \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award
Absolute TSR reduced on a linear basis					0.00%
Simple TSR reduced on a linear basis					0.00%
2015 Outperformance Program
Share-based Compensation Arrangement by Share-based Payment Award
Maximum share value authorized under plan					$ 15,000,000
Performance period					3 years
Target bonus pool					$ 3,800,000
Simple annual TSR					10.50%
Percentage amount TSR exceeds simple annual TSR					4.00%
Simple annual TSR					9.00%
Percent TSR exceeds SNL Equity REIT index					4.00%
Percent of underperformance of SNL Equity REIT index					4.00%
Underperformance of SNL Equity REIT index per year					3.00%
Award vesting period					2 years
Stock settled awards		$ 3,980,000
Forfeiture adjustment as percent of total cost	6.00%
OPP, fair value					$ 4,270,000
Risk free interest rate	1.13%
Expected dividend payment per share	$ 1.50
2015 Outperformance Program \| The Company
Share-based Compensation Arrangement by Share-based Payment Award
Expected volatility rate	22.00%
2015 Outperformance Program \| SNL Equity REIT Index
Share-based Compensation Arrangement by Share-based Payment Award
Expected volatility rate	22.00%
2015 Outperformance Program \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award
Absolute TSR reduced on a linear basis					100.00%
Simple TSR reduced on a linear basis					7.00%
2015 Outperformance Program \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award
Absolute TSR reduced on a linear basis					0.00%
Simple TSR reduced on a linear basis					0.00%