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Stock-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2015
Restricted Stock Units  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Compensation, Restricted Stock Units Award Activity
The following table summarizes equity classified restricted stock unit activity and unvested restricted stock units for the nine months ended September 30, 2015:

Number of Shares
Weighted Average Grant Date Fair Value
Unvested at December 31, 2014
256,884

$
17.93

Granted
127,000

14.23

Dividend reinvestment issuances
20,506

14.70

Vested
(69,312
)
17.84

Forfeited
(22,534
)
16.50

Unvested at September 30, 2015
312,544

$
16.34

Restricted Stock Units, Liability Awards  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Compensation, Restricted Stock Units Award Activity
The following table summarizes liability classified restricted stock unit activity and unvested restricted stock units for the nine months ended September 30, 2015:

Number of Shares
Weighted Average Reporting Date Fair Value
Unvested at December 31, 2014
124,093

$
14.09

Granted
16,200

15.76

Dividend reinvestment issuances
7,788

15.69

Vested
(49,317
)
12.64

Forfeited


Unvested at September 30, 2015
98,764

$
15.21