Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation

v3.10.0.1
Stock-Based Compensation
 6 Months Ended
Jun. 30, 2018
Share-based Compensation [Abstract]  
Stock-Based Compensation
STOCK-BASED COMPENSATION
During the three and six months ended June 30, 2018, the Company’s stock-based compensation cost was $3.3 million and $6.0 million, respectively, of which the Company capitalized $1.3 million and $2.4 million, respectively, relating to its exploration and development efforts. During the three and six months ended June 30, 2017, the Company’s stock-based compensation cost was $2.6 million and $5.2 million, respectively, of which the Company capitalized $1.1 million and $2.1 million, respectively, relating to its exploration and development efforts.
The following table summarizes restricted stock activity for the six months ended June 30, 2018:
 
 
Number of
Unvested
Restricted Shares
 
Weighted
Average
Grant Date
Fair Value
Unvested shares as of January 1, 2018
976,027

 
$
18.71

Granted
1,197,628

 
9.45

Vested
(301,017
)
 
14.41

Forfeited
(20,651
)
 
17.87

Unvested shares as of June 30, 2018
1,851,987

 
$
13.43


Unrecognized compensation expense as of June 30, 2018 related to restricted shares was $19.3 million. The expense is expected to be recognized over a weighted average period of 1.65 years.