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Stock-Based Compensation Stock-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2011
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] 
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]
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 three and nine months ended September 30, 2011 and 2010 (in thousands): 
 
 
For the three months ended September 30,
 
 
For the nine months ended September 30,
 
 
2011
 
2010
 
 
2011
 
2010
 
 
 
 
 
 
 
 
 
 
Restricted stock
$
2,696

 
1,713

 
$
8,087

 
5,138

Directors' fees paid in common stock
 
72

 
66

 
 
206

 
173

Less: Amount capitalized
 
(415
)
 
(167
)
 
 
(930
)
 
(499
)
Total
$
2,353

 
1,612

 
$
7,363

 
4,812

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
The following table reports stock option activity during the nine months ended September 30, 2011: 
 
Number of
Options
 
Weighted
Average
Exercise
Price
 
Weighted
Average
Remaining
Contractual
Term
(in years)
 
Aggregate
Intrinsic
Value
(in thousands)
Outstanding December 31, 2010
442,880

$
51.85

 
3.5

$
(4,255
)
Less: Exercised
12,561

 
35.61

 
 
 
 
Less: Forfeited
26,754

 
51.43

 
 
 
 
Less: Expired
12,023

 
60.18

 
 
 
 
Outstanding September 30, 2011
391,542

$
52.14

 
3.2

$
(6,583
)
Vested and expected to vest - September 30, 2011
391,542

$
52.14

 
3.2

$
(6,583
)
Exercisable September 30, 2011
391,542

$
52.14

 
3.2

$
(6,583
)
Schedule of Nonvested Option Activity [Table Text Block]
The following table presents information regarding non-vested option activity during the nine months ended September 30, 2011: 
 
Non-vested
Number of
Options
 
Weighted
Average
Grant-Date
Fair Value
Non-vested at December 31, 2010
2,185

$
8.78

Less: 2011 Vesting
2,185

 
8.78

Non-vested at September 30, 2011

$

Schedule of Nonvested Share Activity [Table Text Block]
The following table reports non-vested restricted stock activity during the nine months ended September 30, 2011: 
 
Number of
Shares
 
Intrinsic
Value
(in thousands)
 
Weighted
Average
Grant
Price
Non-vested at December 31, 2010
436,559

 
 
 
 
Add: Time-based awards granted
128,139

 
 
$
42.19

Add: Performance-based awards granted
18,246

 
 
$
41.54

Add: Market-based awards granted
165,689

 
 
$
41.54

Less: Vested and Distributed
171,292

 
 
$
43.08

Less: Forfeited
2,745

 
 
$
41.56

Non-vested at September 30, 2011
574,596

$
20,300