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STOCK-BASED COMPENSATION (Tables)
 12 Months Ended
Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]
The charge for stock-based compensation in our consolidated statements of operations and comprehensive income / loss was as follows:
 
For The Year Ended December 31,
 
2017

 
2016

 
2015

Stock-based compensation expense from continuing operations
$
4,280

 
$
3,383

 
$
2,311

Stock-based compensation expense from discontinued operations (1)
132

 
127

 
128

(1) 
All stock-based compensation expense from discontinued operations relate to employees of Croatia and Slovenia.
Schedule of Stock Option Activity
A summary of option activity for the year ended December 31, 2017 is presented below:
 
Shares

 
Weighted Average Exercise Price per Share

 
Weighted Average Remaining Contractual Term (years)
 
Aggregate Intrinsic Value

Outstanding at December 31, 2016
2,011,392

 
$
2.32

 
8.58
 
$
453

Outstanding at December 31, 2017
2,011,392

 
$
2.32

 
7.58
 
$
4,677

Vested or expected to vest at December 31, 2017
2,011,392

 
$
2.32

 
7.58
 
$
4,677

Exercisable at December 31, 2017
902,848

 
$
2.31

 
7.51
 
$
2,113
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]
The following table summarizes information about stock option activity during 2017, 2016, and 2015:
 
2017
 
2016
 
2015
 
Shares

 
Weighted Average Exercise Price (per share)

 
Shares

 
Weighted Average Exercise Price (per share)

 
Shares

 
Weighted Average Exercise Price (per share)

Outstanding at January 1
2,011,392

 
$
2.32

 
1,666,000

 
$
3.53

 
155,000

 
$
29.88

Awards granted
—

 
—

 
411,392

 
2.46

 
1,600,000

 
2.29

Awards forfeited
—

 
—

 
—

 
—

 
(20,000
)
 
23.12

Awards expired
—

 
—

 
(66,000
)
 
33.66

 
(69,000
)
 
28.23

Outstanding at December 31
2,011,392

 
$
2.32

 
2,011,392

 
$
2.32

 
1,666,000

 
$
3.53
Schedule of Restricted Stock Unit Activity
The following table summarizes information about unvested RSUs as at December 31, 2017:
 
Number of
Shares / Units

 
Weighted-Average
Grant Date Fair Value

Unvested at December 31, 2016
2,542,625

 
$
2.61

Granted
1,158,887

 
3.62

Vested
(931,867
)
 
2.69

Forfeited
(75,582
)
 
1.53

Unvested at December 31, 2017
2,694,063

 
$
3.07