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STOCKHOLDERS' EQUITY Share-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2018
Share-based Compensation, Stock Options, Activity [Table Text Block]
Information with respect to option shares granted under all of our stock incentive plans for the nine months ended September 30, 2018 was as follows:
 
Time-Based Shares
Performance-Based Shares
Total Shares
Weighted-
Average
Exercise
Price
Weighted-
Average
Remaining
Contractual
Term (years)
Aggregate
Intrinsic
Value
(in thousands)
Options outstanding at January 1, 2018
2,290,017

—

2,290,017

$9.65
 
 
Granted
—

—

—

$—
 
 
Exercised
—

—

—

$—
 
 
Forfeited or canceled
(1,373,552
)
—

(1,373,552
)
$10.44
 
 
Options outstanding at September 30, 2018
916,465

—

916,465

$8.48
1.88
$—
Options vested at September 30, 2018 or expected to vest
 
 
916,465

$8.48
1.88
$—
Options exercisable at September 30, 2018
 
 
916,465

$8.48
1.88
$—
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]
Information with respect to our non-vested restricted stock units for the nine months ended September 30, 2018 was as follows:
 
Non-Vested Restricted Stock Units
 
Time-Based Shares
Performance-Based Shares
Total Shares
Weighted-
Average
Grant-Date
Fair Value
Weighted-
Average
Remaining
Contractual
Term (years)
Aggregate
Intrinsic
Value
(in thousands)
Non-vested at January 1, 2018
1,809,138

1,254,110

3,063,248

$5.10
 
 
Granted
1,693,728

771,124

2,464,852

$4.97
 
 
Vested
(600,134
)
—

(600,134
)
$5.62
 
 
Forfeited
(859,458
)
(1,059,091
)
(1,918,549
)
$5.09
 
 
Non-vested at September 30, 2018
2,043,274

966,143

3,009,417

$4.90
1.11
$17,816
Expected to vest
 
 
2,689,399

$5.02
1.11
$15,921
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]
Stock-based compensation was included in the following captions in our condensed consolidated statements of operations for the three and nine months ended September 30, 2018 and 2017 (in thousands):
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2018

2017
 
2018
 
2017
Cost of products revenues
$
40

 
$
14

 
$
83

 
$
39

Cost of services revenues
55

 
49

 
139

 
508

Research and development expenses
236

 
222

 
439

 
474

Marketing and selling expenses
419

 
582

 
1,152

 
1,375

General and administrative expenses
1,326

 
1,614

 
2,518

 
3,478

 
$
2,076

 
$
2,481

 
$
4,331

 
$
5,874