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STOCKHOLDERS' EQUITY (Tables)
 9 Months Ended
Sep. 30, 2016
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
Information with respect to option shares granted under all the Company’s stock incentive plans for the nine months ended September 30, 2016 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 as of January 1, 2016
4,345,334

—

4,345,334

$10.68
 
 
Exercised
(787,867
)
—

(787,867
)
$7.67
 
 
Forfeited or canceled
(655,602
)
—

(655,602
)
$15.28
 
 
Options outstanding as of September 30, 2016
2,901,865

—

2,901,865

$10.46
3.26
$600
Options vested as of September 30, 2016 or expected to vest
 
 
2,901,865

$10.46
3.25
$600
Options exercisable as of September 30, 2016
 
 
2,662,985

$10.72
3.14
$498
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]
Information with respect to the Company’s non-vested restricted stock units for the nine months ended September 30, 2016 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 as of January 1, 2016
905,934

360,074

1,266,008

$9.97
 
 
Granted
916,972

489,482

1,406,454

$6.84
 
 
Vested
(397,936
)
—

(397,936
)
$11.95
 
 
Forfeited
(257,077
)
(155,719
)
(412,796
)
$7.93
 
 
Non-vested as of September 30, 2016
1,167,893

693,837

1,861,730

$7.64
0.86
$14,764
Expected to vest
 
 
1,589,999

$7.66
0.86
$12,609
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 the Company’s condensed consolidated statements of operations for the nine months ended September 30, 2016 and 2015 (in thousands):
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2016
 
2015
 
2016
 
2015
Cost of products revenues
$
12

 
$
40

 
$
43

 
$
175

Cost of services revenues
145

 
142

 
445

 
476

Research and development expenses
73

 
73

 
222

 
225

Marketing and selling expenses
547

 
529

 
1,508

 
1,902

General and administrative expenses
951

 
1,603

 
3,898

 
4,953

 
$
1,728

 
$
2,387

 
$
6,116

 
$
7,731