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STOCKHOLDERS' EQUITY (Tables)
 9 Months Ended
Sep. 30, 2015
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, 2015 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, 2015
5,564,111

—

5,564,111

$11.20
 
 
Granted
4,000

—

4,000

$9.10
 
 
Exercised
(201,153
)
—

(201,153
)
$11.63
 
 
Forfeited or canceled
(444,668
)
—

(444,668
)
$16.26
 
 
Options outstanding at September 30, 2015
4,922,290

—

4,922,290

$10.72
3.83
$989
Options vested at September 30, 2015 or expected to vest
 
 
4,842,392

$10.77
3.80
$955
Options exercisable at September 30, 2015
 
 
3,936,952

$11.47
3.42
$562
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, 2015 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, 2015
811,880

—

811,880

$10.01
 
 
Granted
651,274

438,146

1,089,420

$13.49
 
 
Vested
(374,307
)
—

(374,307
)
$10.17
 
 
Forfeited
(310,112
)
(78,072
)
(388,184
)
$12.31
 
 
Non-vested at September 30, 2015
778,735

360,074

1,138,809

$12.50
0.83
$9,054
Expected to vest
 
 
1,043,863

$12.53
0.78
$8,299
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 three and nine months ended September 30, 2015 and 2014 (in thousands):
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2015
 
2014
 
2015
 
2014
Cost of products revenues
$
40

 
$
62

 
$
175

 
$
203

Cost of services revenues
142

 
16

 
476

 
191

Research and development expenses
73

 
96

 
225

 
336

Marketing and selling expenses
529

 
252

 
1,902

 
1,186

General and administrative expenses
1,603

 
(1,106
)
 
4,953

 
802

 
$
2,387

 
$
(680
)
 
$
7,731

 
$
2,718