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Segments and Major Customers (Tables)
 9 Months Ended
Sep. 30, 2013
Segment Reporting [Abstract]  
Reported segment revenues, and reported segment direct operating income (loss)
The tables below present reported segment operating income (loss) for the three and nine months ended September 30, 2013 and 2012, respectively.
 
For the Three Months Ended September 30, 2013
 
For the Nine Months Ended September 30, 2013
 
MID
 
CTO
 
All Other
 
Total
 
MID
 
CTO
 
All Other
 
Total
 
(In thousands)
 
(In thousands)
Revenues
$
66,103

 
$
—

 
$
7,191

 
$
73,294

 
$
175,233

 
$
—

 
$
22,846

 
$
198,079

Other patent royalties received
179

 
—

 
850

 
1,029

 
5,179

 
—

 
4,479

 
9,658

Customer licensing income
$
66,282

 
$
—

 
$
8,041

 
$
74,323

 
$
180,412

 
$
—

 
$
27,325

 
$
207,737

Segment operating expenses
7,730

 
6,530

 
11,475

 
25,735

 
26,001

 
21,462

 
33,765

 
81,228

Segment operating income (loss)
$
58,552

 
$
(6,530
)
 
$
(3,434
)
 
$
48,588

 
$
154,411

 
$
(21,462
)
 
$
(6,440
)
 
$
126,509

Reconciling items
 

 
 
 
 

 
(39,523
)
 
 

 
 
 
 

 
(110,259
)
Operating income
 

 
 
 
 

 
$
9,065

 
 

 
 
 
 

 
$
16,250

Interest and other income (expense), net
 

 
 
 
 

 
(8,486
)
 
 

 
 
 
 

 
(24,663
)
Income (loss) before income taxes
 

 
 
 
 

 
$
579

 
 

 
 
 
 

 
$
(8,413
)

 
For the Three Months Ended September 30, 2012
 
For the Nine Months Ended September 30, 2012
 
MID
 
CTO
 
All Other
 
Total
 
MID
 
CTO
 
All Other
 
Total
 
(In thousands)
 
(In thousands)
Revenues
$
54,044

 
$
—

 
$
3,486

 
$
57,530

 
$
163,269

 
$
—

 
$
13,339

 
$
176,608

Other patent royalties received
3,750

 
—

 
1,125

 
4,875

 
3,750

 
—

 
4,740

 
8,490

Customer licensing income
$
57,794

 
$
—

 
$
4,611

 
$
62,405

 
$
167,019

 
$
—

 
$
18,079

 
$
185,098

Segment operating expenses
7,147

 
6,801

 
7,247

 
21,195

 
28,741

 
21,169

 
23,435

 
73,345

Segment operating income (loss)
$
50,647

 
$
(6,801
)
 
$
(2,636
)
 
$
41,210

 
$
138,278

 
$
(21,169
)
 
$
(5,356
)
 
$
111,753

Reconciling items
 

 
 
 
 

 
(88,310
)
 
 

 
 
 
 

 
(198,160
)
Operating loss
 

 
 
 
 

 
$
(47,100
)
 
 

 
 
 
 

 
$
(86,407
)
Interest and other income (expense), net
 

 
 
 
 

 
(7,133
)
 
 

 
 
 
 

 
(20,245
)
Loss before income taxes
 

 
 
 
 

 
$
(54,233
)
 
 

 
 
 
 

 
$
(106,652
)
Schedule of customer accounts representing 10% or more than 10% of total revenue
Revenue from the Company’s major customers representing 10% or more of total revenue for the three and nine months ended September 30, 2013 and 2012, respectively, was as follows:
 
 
Three Months Ended
 
Nine Months Ended
 
 
September 30,
 
September 30,
Customer 
 
2013
 
2012
 
2013
 
2012
Customer A
 
31
%
 
38
%
 
34
%
 
38
%
Customer B
 
16
%
 
*

 
*

 
*

Customer C
 
10
%
 
*

 
*

 
*

Customer D
 
*

 
*

 
*

 
10
%
_________________________________________
*    Customer accounted for less than 10% of total revenue in the period
Revenue from external customer by geographic regions
Revenue from customers in the geographic regions based on the location of customers' headquarters is as follows:
 
 
Three Months Ended
 
Nine Months Ended
 
 
September 30,
 
September 30,
(In thousands)
 
2013
 
2012
 
2013
 
2012
South Korea
 
$
34,343

 
$
21,648

 
$
78,871

 
$
66,363

USA
 
15,880

 
14,309

 
56,555

 
45,778

Japan
 
15,943

 
17,347

 
42,812

 
50,818

Europe
 
4,098

 
1,493

 
11,658

 
3,564

Canada
 
2,280

 
1,983

 
5,928

 
5,835

Asia-Other
 
750

 
750

 
2,255

 
4,250

Total
 
$
73,294

 
$
57,530

 
$
198,079

 
$
176,608