Equity - Outperformance Program (Details) (USD $)
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6 Months Ended | 12 Months Ended | 6 Months Ended | 12 Months Ended | 0 Months Ended | ||||||||||||||||||||||
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Jun. 30, 2014
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Dec. 31, 2013
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Jun. 30, 2014
General and Administrative Expense
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Jun. 30, 2013
General and Administrative Expense
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Jun. 30, 2014
Deferred Leasing Costs and Lease Intatngibles, Net
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Jun. 30, 2013
Deferred Leasing Costs and Lease Intatngibles, Net
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Jun. 30, 2014
Additional Paid in Capital
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Jun. 30, 2013
Additional Paid in Capital
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Dec. 31, 2013
Additional Paid in Capital
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Jan. 02, 2012
2012 Outperformance Program
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Jan. 02, 2012
2012 Outperformance Program
The Company
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Jan. 02, 2012
2012 Outperformance Program
SNL Equity REIT Index
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Jan. 02, 2012
2012 Outperformance Program
Maximum
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Jan. 02, 2012
2012 Outperformance Program
Minimum
|
Jan. 02, 2012
2012 Outperformance Program
Restricted Stock Units (RSUs)
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Jan. 02, 2013
2013 Outperformance Program
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Jan. 02, 2013
2013 Outperformance Program
The Company
|
Jan. 02, 2013
2013 Outperformance Program
SNL Equity REIT Index
|
Jan. 02, 2013
2013 Outperformance Program
Maximum
|
Jan. 02, 2013
2013 Outperformance Program
Minimum
|
Jan. 02, 2013
2013 Outperformance Program
Restricted Stock Units (RSUs)
|
Jan. 02, 2014
2014 Outperformance Program
|
Jan. 02, 2014
2014 Outperformance Program
The Company
|
Jan. 02, 2014
2014 Outperformance Program
SNL Equity REIT Index
|
Jan. 02, 2014
2014 Outperformance Program
Maximum
|
Jan. 02, 2014
2014 Outperformance Program
Minimum
|
Jan. 02, 2014
2014 Outperformance Program
Restricted Stock Units (RSUs)
|
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Share-based Compensation Arrangement by Share-based Payment Award | |||||||||||||||||||||||||||
Maximum share value authorized under plan | $ 10,000,000.0 | $ 11,000,000 | $ 12,000,000.0 | ||||||||||||||||||||||||
Performance period | 3 years | 3 years | 3 years | ||||||||||||||||||||||||
Percentage Amount TSR Exceeds Simple Annual TSR | 4.00% | 4.00% | 4.00% | ||||||||||||||||||||||||
Simple Annual TSR | 9.00% | 9.00% | 9.00% | ||||||||||||||||||||||||
Percent TSR Exceeds SNL Equity REIT Index | 4.00% | 4.00% | 4.00% | ||||||||||||||||||||||||
Absolute TSR Reduced on a Linear Basis | 100.00% | 0.00% | 100.00% | 0.00% | 100.00% | 0.00% | |||||||||||||||||||||
Simple TSR Reduced on a Linear Basis | 7.00% | 0.00% | 7.00% | 0.00% | 7.00% | 0.00% | |||||||||||||||||||||
Percent of Underperformance of SNL Equity REIT Index | 4.00% | 4.00% | 4.00% | ||||||||||||||||||||||||
Underperformance of SNL Equity REIT Index per Year | 3.00% | 3.00% | 3.00% | ||||||||||||||||||||||||
Hypothetical bonus pool for stock settled award | 4,000,000 | 2,000,000 | 4,000,000 | 2,000,000 | |||||||||||||||||||||||
Award vesting period | 2 years | 2 years | 2 years | ||||||||||||||||||||||||
Stock settled awards | 3,490,000 | 4,140,000 | 3,210,000 | ||||||||||||||||||||||||
Forfeiture adjustment as percent of total cost | 6.00% | 6.00% | 10.00% | ||||||||||||||||||||||||
Expected volatility rate | 36.00% | 35.00% | 33.00% | 25.00% | 28.00% | 26.00% | |||||||||||||||||||||
Risk free interest rate | 0.40% | 0.38% | 0.77% | ||||||||||||||||||||||||
Expected dividend payment per share | $ 1.62 | $ 1.50 | $ 1.50 | ||||||||||||||||||||||||
Amortization of stock-based compensation | 3,451,000 | 6,682,000 | 3,451,000 | 3,623,000 | 6,682,000 | ||||||||||||||||||||||
Allocated Share-based Compensation Expense | $ 3,255,000 | $ 3,512,000 | $ 196,000 | $ 111,000 |