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Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Key Components of Share-based Awards
The following table outlines key components of the 2016 and 2015 OPP Plans:
 
2016 OPP Plan
 
2015 OPP Plan
Maximum bonus pool, in millions
$17.5
 
$15.0
Performance period
1/1/2016 to 12/31/2018
 
1/1/2015 to 12/31/2017
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions
The per unit fair value of one-time retention award granted was estimated on the date of grant using the following assumptions in the Monte Carlo valuation:
 
Assumptions
Expected price volatility for the Company
23.00%
Expected price volatility for the particular REIT index
18.00%
Risk-free rate
1.63%
Dividend yield
3.20
The per unit fair value of OPP award granted was estimated on the date of grant using the following assumptions in the Monte Carlo valuation:
 
2016
 
2015
 
2014
Expected price volatility for the Company
24.00%
 
22.00%
 
28.00%
Expected price volatility for the particular REIT index
17.00%
 
22.00%
 
26.00%
Risk-free rate
1.09%
 
1.13%
 
0.77%
Dividend yield
2.40
 
1.50
 
1.50
Nonvested Restricted Stock Shares Activity
The following table summarizes the activity and status of all unvested awards:

 
 
2016
 
2015
 
2014
 
 
Shares
 
Weighted-Average Grant-Date Fair Value
 
Shares
 
Weighted-Average Grant-Date Fair Value
 
Shares
 
Weighted-Average Grant-Date Fair Value
Unvested at January 1
 
827,950

 
$
28.92

 
543,707

 
$
26.43

 
541,180

 
$
19.98

Granted
 
489,826

 
30.95

 
629,504

 
29.01

 
281,491

 
29.38

Vested
 
(430,597
)
 
26.75

 
(335,544
)
 
24.80

 
(275,051
)
 
16.83

Canceled
 

 

 
(9,717
)
 
38.17

 
(3,913
)
 
20.44

Unvested at December 31
 
887,179

 
$
31.09

 
827,950

 
$
28.92

 
543,707

 
$
26.43


Year Ended December 31,
 
Non-Vested Shares Issued
 
Weighted Average Grant - Date Fair Value
 
Vested Shares
 
Total Vest-Date Fair Value (in thousands)
2016
 
489,826

 
$
30.95

 
(430,597
)
 
$
14,736

2015
 
629,504

 
29.01

 
(335,544
)
 
9,606

2014
 
281,491

 
29.38

 
(275,051
)
 
9,794

Stock Compensation Related to OPP Plans and Restricted Stock Awards
The following table presents the classification and amount recognized for stock-based compensation related to the Company’s awards:    

 
For the Year Ended December 31,
 
Consolidated Financial
 
2016
 
2015
 
2014
 
Statement Classification
Expensed stock compensation
$
14,144

 
$
8,421

 
$
7,559

 
General and administrative expenses
Capitalized stock compensation
510

 
411

 
420

 
Deferred leasing costs and lease intangibles, net and tenant improvements
Total stock compensation
$
14,654

 
$
8,832

 
$
7,979

 
Additional paid-in capital and non-controlling interestunits in the operating partnership