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STOCK-BASED COMPENSATION (Notes)
 9 Months Ended
Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
STOCK-BASED COMPENSATION

Information with respect to options granted under all the Company’s stock option plans for the nine months ended September 30, 2014 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, 2014
3,237,915

1,488,500

4,726,415

$14.18
 
 
Granted
2,087,350

—

2,087,350

$7.53
 
 
Exercised
—

—

—

$—
 
 
Forfeited or canceled
(1,023,742
)
(159,250
)
(1,182,992
)
$16.49
 
 
Options outstanding at September 30, 2014
4,301,523

1,329,250

5,630,773

$11.23
4.91
$8,406
Options vested at September 30, 2014 or expected to vest
 
 
5,256,455

$11.44
4.83
$7,595
Options exercisable at September 30, 2014
 
 
2,452,167

$14.77
3.71
$1,727


Information with respect to the Company’s non-vested restricted stock units for the nine months ended September 30, 2014 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, 2014
205,233

117,500

322,733

$11.30
 
 
Granted
—

—

—

$—
 
 
Vested
(76,171
)
(43,750
)
(119,921
)
$9.74
 
 
Forfeited
(5,156
)
(42,500
)
(47,656
)
$15.26
 
 
Non-vested at September 30, 2014
123,906

31,250

155,156

$11.29
2.44
$1,566
Expected to vest
 
 
109,757

$8.76
1.11
$1,107


Stock-based compensation was included in the following captions in the Company’s consolidated statements of operations for the three and nine months ended September 30, 2014 and 2013 (in thousands):
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2014
 
2013
 
2014
 
2013
Cost of products revenues
$
62

 
$
91

 
$
203

 
$
285

Cost of services revenues
16

 
94

 
191

 
338

Research and development expenses
96

 
137

 
336

 
455

Marketing and selling expenses
252

 
401

 
1,186

 
1,455

General and administrative expenses
(1,106
)
 
808

 
802

 
3,183

 
$
(680
)
 
$
1,531

 
$
2,718

 
$
5,716



Negative stock-based compensation expense for the three-month ended September 30, 2014 was due to the reversal of previously recognized stock-based compensation expense attributable to performance-based awards which are no longer expected to vest based on current projections of relevant performance conditions. The timing and amount of stock-based compensation attributable to performance-based awards is subject to significant estimates as to whether or not performance conditions will be met, which can cause associated expense recognition to fluctuate significantly from quarter to quarter based on changes in estimates that occur during the periods performance is being measured.