XML 45 R28.htm IDEA: XBRL DOCUMENT v3.7.0.1
Stockholders' Equity (Tables)
12 Months Ended
Dec. 31, 2016
Stockholders Equity Note [Abstract]  
Schedule of Stock Options Roll Forward [Table Text Block]
A summary of stock option activity is as follows:
 
 
 
Outstanding stock options
 
 
 
Number of
 
Weighted average
 
 
 
shares
 
exercise price
 
Balance at December 31, 2015
 
 
1,722,552
 
$
5.21
 
Options granted
 
 
990,000
 
 
8.65
 
Options exercised
 
 
(208,869)
 
 
2.90
 
Options forfeited
 
 
(269,471)
 
 
12.03
 
Options cancelled
 
 
(8,362)
 
 
7.61
 
Balance at December 31, 2016
 
 
2,225,850
 
 
6.12
 
 
 
 
 
 
 
 
 
Options exercisable at December 31, 2016
 
 
1,282,660
 
 
4.71
 
Schedule of Stock Options Outstanding and Exercisable [Table Text Block]
The following table summarizes information about stock options outstanding and exercisable at December 31, 2016:
 
Options outstanding
 
Options exercisable
 
Number
outstanding
 
Weighted
average
remaining
contractual
life
(Years)
 
Weighted
average
exercise
price
 
Aggregate intrinsic
value
 
Number
exerciseable
 
Weighted
average
remaining
contractual
life
(Years)
 
Weighted
average
exercise
price
 
Aggregate
intrinsic
value
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2,225,850
 
 
7.07
 
$
6.12
 
$
733,713
 
 
1,282,660
 
 
5.43
 
$
4.71
 
$
706,552
 
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
A summary of restricted common stock activity is as follows:
 
 
 
Number of
 
 
 
unvested restricted
 
 
 
shares
 
 
 
 
 
Balance at December 31, 2015
 
 
3,000
 
Granted
 
 
-
 
Vested
 
 
(3,000)
 
Cancelled
 
 
-
 
Balance at December 31, 2016
 
 
-