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Stock-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2018
Stock-Based Compensation [Abstract]  
Share-based Compensation, Stock Options, Activity [Table Text Block]
The following table summarizes the stock option activity during the nine months ended September 30, 2018:
 
 
 
 
 
 
 
 
 
 
Number of Options Outstanding
 
Weighted-Average Exercise Price
 
Weighted-Average Remaining Contractual Term (in Years)
 
Aggregate Intrinsic Value (in Thousands)
Outstanding at December 31, 2017
 
651,875

 
$
4.51

 
0.4

 
$
352

Granted
 
—

 
—

 
 
 
 
Expired
 
(611,875
)
 
4.50

 
 
 
 
Outstanding at September 30, 2018
 
40,000

 
$
4.67

 
1.6

 
$
—

Exercisable at September 30, 2018
 
40,000

 
$
4.67

 
1.6

 
$
—
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
No options were granted during the nine months ended September 30, 2018.
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]
nine months ended September 30, 2018:
 
 
 
 
 
 
 
Number of Restricted Stock Awards
 
Weighted-Average Grant Date Fair Value (per Share)
Unvested at December 31, 2017
 
1,952,665

 
$
4.14

Granted
 
350,000

 
2.55

Vested
 
(79,538
)
 
2.95

Cancelled for Tax Withholding
 
(135,512
)
 
2.65

Forfeited
 
(1,495,165
)
 
4.14

Unvested at September 30, 2018
 
592,450

 
$
3.48
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]
The following table summarizes the activity related to unvested Restricted Stock Units for the nine months ended September 30, 2018:
 
 
 
 
 
 
 
Number of Restricted Stock Units
 
Weighted-Average Grant Date Fair Value (per Share)
Unvested at December 31, 2017
 
500,000

 
$
5.73

Granted
 
—

 
—

Vested
 
—

 
—

Forfeited
 
—

 
—

Unvested at September 30, 2018
 
500,000

 
$
5.73