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Real Estate Activities (Tables)
3 Months Ended
Mar. 31, 2014
Real Estate [Abstract]  
Investments in Real Estate
Investments in real estate as of March 31, 2014 and December 31, 2013 were comprised of the following:
 
(in thousands of dollars)
As of March 31,
2014
 
As of December 31,
2013
Buildings, improvements and construction in progress
$
3,068,536

 
$
3,049,758

Land, including land held for development
482,646

 
478,110

Total investments in real estate
3,551,182

 
3,527,868

Accumulated depreciation
(1,040,630
)
 
(1,012,746
)
Net investments in real estate
$
2,510,552

 
$
2,515,122

Summary of Capitalized Salaries, Commissions and Benefits, Real Estate Taxes and Interest
The following table summarizes our capitalized salaries, commissions and benefits, real estate taxes and interest for the three months ended March 31, 2014 and 2013:
 
 
Three Months Ended 
 March 31,
(in thousands of dollars)
2014
 
2013
Development/Redevelopment Activities:
 
 
 
Salaries and benefits
$
394

 
$
176

Interest
103

 
76

Leasing Activities:
 
 
 
Salaries, commissions and benefits
1,420

 
1,537

Summary of Revenue and Expense Information for Discontinued Operations
following table summarizes revenue and expense information for the three months ended March 31, 2013 for these discontinued operations (there were no operating results for these properties from discontinued operations in the three months ended March 31, 2014):
 
 
Three Months Ended 
 March 31,
(in thousands of dollars)
2013
Real estate revenue
$
4,143

Expenses:
 
Operating expenses
(2,086
)
Depreciation and amortization
(365
)
Interest expense
(671
)
Total expenses
(3,122
)
Operating results from discontinued operations
1,021

Gains on sales of discontinued operations
33,254

Income from discontinued operations
$
34,275