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STOCKHOLDERS' EQUITY (Tables)
 6 Months Ended
Jun. 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 six months ended June 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
 
 
Forfeited or canceled
(455,570
)
—

(455,570
)
$16.42
 
 
Options outstanding as of June 30, 2016
3,889,764

—

3,889,764

$10.01
3.41
$0
Options vested as of June 30, 2016 or expected to vest
 
 
3,889,764

$10.01
3.41
$0
Options exercisable as of June 30, 2016
 
 
3,492,116

$10.29
3.26
$0
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 six months ended June 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
668,472

489,482

1,157,954

$6.91
 
 
Vested
(264,688
)
—

(264,688
)
$13.36
 
 
Forfeited
(121,882
)
(41,010
)
(162,892
)
$6.94
 
 
Non-vested as of June 30, 2016
1,187,836

808,546

1,996,382

$7.99
0.88
$11,579
Expected to vest
 
 
1,727,159

$7.97
0.88
$10,018
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 six months ended June 30, 2016 and 2015 (in thousands):
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2016
 
2015
 
2016
 
2015
Cost of products revenues
$
1

 
$
40

 
$
31

 
$
135

Cost of services revenues
151

 
175

 
300

 
334

Research and development expenses
65

 
46

 
149

 
152

Marketing and selling expenses
520

 
683

 
961

 
1,373

General and administrative expenses
1,553

 
1,938

 
2,947

 
3,350

 
$
2,290

 
$
2,882

 
$
4,388

 
$
5,344