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Stock-Based Compensation
 3 Months Ended
Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock-Based Compensation
Stock-Based Compensation
 
At March 31, 2017, 1,630,830 shares reserved under the Company’s stock-based compensation plans were available for future grants.

During the three months ended March 31, 2017 and 2016, no shares of restricted stock or stock options were granted by the Company.
 
The following table presents the activity related to stock options for the three months ended March 31, 2017 and 2016:
 
Options
 
Weighted-
average
exercise
price
 
Weighted-
average
remaining
contractual
term (years)
 
Aggregate
intrinsic
value (000)
Options outstanding at January 1, 2017
3,383,972

 
$
5.32

 
8.0
 
$
11,180.8

Granted
—

 
—

 
N/A
 
N/A

Canceled / forfeited
(907
)
 
3.62

 
N/A
 
N/A

Exercised
(8,150
)
 
4.60

 
N/A
 
N/A

Expired
(3,207
)
 
273.20

 
N/A
 
N/A

Options outstanding at March 31, 2017
3,371,708

 
$
5.06

 
7.8
 
$
9,769.3

Options exercisable at March 31, 2017
71,708

 
$
17.68

 
4.1
 
$
133.3

 
 
 
 
 
 
 
 
Options outstanding at January 1, 2016
3,375,909

 
$
5.44

 
9.0
 
$
4,243.7

Granted
—

 
—

 
N/A
 
N/A

Canceled / forfeited
(234
)
 
78.08

 
N/A
 
N/A

Expired
(1,634
)
 
$
151.20

 
N/A
 
N/A

Options outstanding at March 31, 2016
3,374,041

 
$
5.34

 
8.8
 
$
3,038.4

Options exercisable at March 31, 2016
74,041

 
29.80

 
4.5
 
$
2.4


 
Stock-based compensation expense related to stock options for the three months ended March 31, 2017 and 2016 was $0.3 million. As of March 31, 2017, there was approximately $3.1 million of unrecognized compensation cost related to non-vested stock options that will be recognized over the remaining vesting periods of the stock options.

The following table presents the activity related to non-vested restricted stock for the three months ended March 31, 2017:
 
 
Number of
shares
 
Weighted-
average grant
date fair value
per share
Non-vested as of January 1, 2017
1,148,975

 
$
6.39

Granted
—

 
—

Vested
—

 
—

Canceled / forfeited
(2,841
)
 
5.28

Non-vested as of March 31, 2017
1,146,134

 
$
6.39


 
Non-vested restricted stock is scheduled to vest over a three to five year period. The unearned compensation on restricted stock is being amortized to expense on a straight-line basis over the estimated applicable service or vesting periods. As of March 31, 2017, unrecognized compensation cost related to non-vested restricted stock totaled approximately $4.5 million, which is expected to be recognized over the next five years. Total expense recognized by the Company for non-vested restricted stock for the three months ended March 31, 2017 and 2016 was $0.5 million and $0.4 million, respectively. There was $0.2 million unrecognized compensation cost related to restricted stock units (“RSUs”) at March 31, 2017 and December 31, 2016.