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Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of stock options, activity
The following table summarizes stock option activity for the six months ended June 30, 2017.
Options
 
Shares
 
Weighted-
Average
Exercise
Price
(Per Share)
 
Weighted-
Average
Remaining
Contractual
Term
 
Aggregate
Intrinsic
Value
($ 000’s)
Outstanding at January 1, 2017
 
3,420,385

 
$
6.26

 
4.3 years
 
$
1,204

Granted(1)
 
445,566

 
6.20

 
 
 
 
Exercised
 
(167,460
)
 
4.90

 
 
 
$
239

Forfeited
 
(373,004
)
 
6.36

 
 
 
 
Expired
 
(34,273
)
 
4.39

 
 
 
 
Outstanding at June 30, 2017
 
3,291,214

 
$
6.33

 
4.6 years
 
$
1,519

Exercisable at June 30, 2017
 
2,602,893

 
$
6.49

 
3.7 years
 
$
981

(1) During the six months ended June 30, 2017, 320,000 options were granted to employees as inducements for employment and 125,566 options were granted to the members of our Board of Directors. The weighted-average grant date fair value of options granted was $3.01 per share for the six months ended June 30, 2017.
Summary of nonvested stock awards granted
The following table summarizes nonvested stock award activity during the six months ended June 30, 2017.
Nonvested stock
 
Shares
 
Weighted
Average Grant
Date Fair Value
(Per Share)
Nonvested at January 1, 2017
 
3,893,050

 
$
4.37

Granted(1)
 
792,930

 
6.32

Vested
 
(28,334
)
 
6.36

Forfeited
 
(2,364,728
)
 
4.03

Nonvested at June 30, 2017
 
2,292,918

 
$
5.36

(1) Includes grants to members of our board of directors of 29,920 shares of restricted stock and 21,259 restricted stock units, inducement grants of 41,000 shares of restricted stock and 59,000 performance-based restricted stock units, and grants to employees under the 2008 EIP of 310,139 shares of restricted stock, 56,812 restricted stock units, and 274,800 performance-based restricted stock units during the six months ended June 30, 2017.