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Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award
The Company recorded stock-based compensation in general and administrative expenses in the accompanying Consolidated Statements of Operations, the components of which are further described below for the years ended December 31, 2013, 2012, and 2011 (in thousands): 
 
 
2013
 
2012
 
2011
Restricted stock (1)
$
14,141

 
11,526

 
10,659

Directors' fees paid in common stock (1)
 
238

 
259

 
269

Capitalized stock-based compensation (2)
 
(2,188
)
 
(1,979
)
 
(1,104
)
Stock-based compensation, net of capitalization
$
12,191

 
9,806

 
9,824

Schedule of Share-based Compensation, Stock Options, Activity
The following table summarizes stock option activity during the year ended December 31, 2013: 
 
 
Number of Options
 
Weighted Average Exercise Price
 
Weighted Average Remaining Contractual Term (in years)
 
Aggregate Intrinsic Value (in thousands)
Outstanding as of December 31, 2012
 
315,924

$
52.39

 
2.1
$
(1,664
)
Less: Exercised (1)
 
20,000

 
51.36

 
 
 
 
Less: Forfeited
 

 

 
 
 
 
Less: Expired
 

 

 
 
 
 
Outstanding of of December 31, 2013
 
295,924

$
52.46

 
1.1
$
(1,822
)
Vested and expected to vest as of December 31, 2013
 
295,924

$
52.46

 
1.1
$
(1,822
)
Exercisable as of December 31, 2013
 
295,924

$
52.46

 
1.1
$
(1,822
)
Schedule of Nonvested Share Activity
The following table summarizes non-vested restricted stock activity during the year ended December 31, 2013: 

 
 
Number of Shares
 
Intrinsic Value (in thousands)
 
Weighted Average Grant Price
Non-vested as of December 31, 2012
 
674,491

 
 
 
 
Add: Time-based awards granted (1) (4)
 
140,850

 
 
$
50.69
Add: Performance-based awards granted (2) (4)
 
12,090

 
 
$
49.63
Add: Market-based awards granted (3) (4)
 
95,104

 
 
$
56.32
Less: Vested and Distributed (5)
 
226,293

 
 
$
50.75
Less: Forfeited
 
10,545

 
 
$
42.31
Non-vested as of December 31, 2013 (6)
 
685,697

$
31,748