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Shareholders' Equity (Tables)
 9 Months Ended
Sep. 30, 2015
Shareholders’ Equity [Abstract]  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

The following table summarizes the activity for stock options and warrants for the nine months ended September 30, 2015:

 
 
Stock Options
 
Warrants
 
 
Shares
 
Weighted Average Exercise Price
 
Weighted Average Remaining Contractual Term (Years)
 
Aggregate Intrinsic Value (In Thousands)
 
Shares
 
Weighted Average Exercise Price
 
Weighted Average Remaining Contractual Term (Years)
 
Aggregate Intrinsic Value (In Thousands)
Outstanding at December 31, 2014
 
4,427,234

 
$
9.19

 
6.93
 
$
28.6

 
3,550,956

 
$
14.12

 
2.12
 
$
1.0

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Changes during the period:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Granted
 
3,036,688

 
$
3.23

 
 
 
 
 
—

 
$
—

 
 
 
 
Exercised
 
—

 
$
—

 
 
 
 
 
—

 
$
—

 
 
 
 
Forfeited
 
(370,588
)
 
$
5.32

 
 
 
 
 
—

 
$
—

 
 
 
 
Expired
 
(481,854
)
 
$
7.34

 
 
 
 
 
(34,504
)
 
$
19.78

 
 
 
 
Outstanding at September 30, 2015
 
6,611,480

 
$
6.82

 
7.36
 
$
15.2

 
3,516,452

 
$
14.06

 
1.39
 
$
—

Vested at September 30, 2015 or expected to vest in the future
 
6,362,987

 
$
6.94

 
7.28
 
$
13.2

 
3,516,452

 
$
14.06

 
1.39
 
$
—

Vested at September 30, 2015
 
4,685,074

 
$
7.91

 
6.69
 
$
—

 
3,516,452

 
$
14.06

 
1.39
 
$
—
Restricted Stock [Table Text Block]
During the nine months ended September 30, 2015 and 2014, the Company issued restricted stock for services as follows (in thousands, except share data):

 
 
Nine Months Ended September 30,
  
 
2015
 
2014
Number of Restricted Stock Issued
 
811,835

 
708,706

Value of Restricted Stock Issued
 
$
2,367.5

 
$
4,964.0