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Segments and Major Customers (Tables) | 9 Months Ended
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Sep. 30, 2015
Concentration Risk [Line Items] |
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, 2015 and 2014, respectively.
| For the Three Months Ended September 30, 2015 |  | For the Nine Months Ended September 30, 2015
| MID |  | CRD |  | Other |  | Total |  | MID |  | CRD |  | Other |  | Total
| (In thousands) |  | (In thousands)
Revenues | $ | 55,383 |  |  | $ | 12,246 |  |  | $ | 6,150 |  |  | $ | 73,779 |  |  | $ | 164,696 |  |  | $ | 36,849 |  |  | $ | 17,960 |  |  | $ | 219,505 |
Segment operating expenses | 11,734 |  |  | 6,653 |  |  | 9,276 |  |  | 27,663 |  |  | 36,055 |  |  | 21,317 |  |  | 25,306 |  |  | 82,678 |
Segment operating income (loss) | $ | 43,649 |  |  | $ | 5,593 |  |  | $ | (3,126 | ) |  | $ | 46,116 |  |  | $ | 128,641 |  |  | $ | 15,532 |  |  | $ | (7,346 | ) |  | $ | 136,827 |
Reconciling items |  |  |  |  |  |  |  |  | (28,476 | ) |  |  |  |  |  |  |  |  |  | (85,741 | )
Operating income |  |  |  |  |  |  |  |  | $ | 17,640 |  |  |  |  |  |  |  |  |  |  | $ | 51,086 |
Interest and other income (expense), net |  |  |  |  |  |  |  |  | (2,578 | ) |  |  |  |  |  |  |  |  |  | (8,417 | )
Income before income taxes |  |  |  |  |  |  |  |  | $ | 15,062 |  |  |  |  |  |  |  |  |  |  | $ | 42,669 |
| For the Three Months Ended September 30, 2014 |  | For the Nine Months Ended September 30, 2014
| MID |  | CRD |  | Other |  | Total |  | MID |  | CRD |  | Other |  | Total
| (In thousands) |  | (In thousands)
Revenues | $ | 52,495 |  |  | $ | 11,255 |  |  | $ | 5,962 |  |  | $ | 69,712 |  |  | $ | 172,314 |  |  | $ | 36,929 |  |  | $ | 15,275 |  |  | $ | 224,518 |
Segment operating expenses | 10,337 |  |  | 7,356 |  |  | 9,793 |  |  | 27,486 |  |  | 28,655 |  |  | 21,076 |  |  | 27,640 |  |  | 77,371 |
Segment operating income (loss) | $ | 42,158 |  |  | $ | 3,899 |  |  | $ | (3,831 | ) |  | $ | 42,226 |  |  | $ | 143,659 |  |  | $ | 15,853 |  |  | $ | (12,365 | ) |  | $ | 147,147 |
Reconciling items |  |  |  |  |  |  |  |  | (27,758 | ) |  |  |  |  |  |  |  |  |  | (89,386 | )
Operating income |  |  |  |  |  |  |  |  | $ | 14,468 |  |  |  |  |  |  |  |  |  |  | $ | 57,761 |
Interest and other income (expense), net |  |  |  |  |  |  |  |  | (3,608 | ) |  |  |  |  |  |  |  |  |  | (22,187 | )
Income before income taxes |  |  |  |  |  |  |  |  | $ | 10,860 |  |  |  |  |  |  |  |  |  |  | $ | 35,574 |
Revenue from external customer by geographic regions | Revenue from customers in the geographic regions based on the location of contracting parties was as follows:
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
(In thousands) |  | 2015 |  | 2014 |  | 2015 |  | 2014
South Korea |  | $ | 30,821 |  |  | $ | 26,821 |  |  | $ | 84,463 |  |  | $ | 80,620 |
USA |  | 33,146 |  |  | 24,950 |  |  | 90,530 |  |  | 81,522 |
Japan |  | 3,460 |  |  | 6,497 |  |  | 19,866 |  |  | 23,140 |
Europe |  | 1,571 |  |  | 4,238 |  |  | 8,287 |  |  | 17,077 |
Canada |  | 6 |  |  | 1,754 |  |  | 207 |  |  | 5,365 |
Singapore |  | 3,222 |  |  | 3,910 |  |  | 11,042 |  |  | 10,170 |
Asia-Other |  | 1,553 |  |  | 1,542 |  |  | 5,110 |  |  | 6,624 |
Total |  | $ | 73,779 |  |  | $ | 69,712 |  |  | $ | 219,505 |  |  | $ | 224,518 |
Accounts Receivable [Member] |
Concentration Risk [Line Items] |
Schedule of customer accounts representing 10% or more than 10% of total revenue | Accounts receivable from the Company's major customers representing 10% or more of total accounts receivable at September 30, 2015 and December 31, 2014, respectively, was as follows:
|  | As of
Customer |  | September 30, 2015 |  | December 31, 2014
Customer 1 (Other segment) |  | 50% |  | 50%
Customer 2 (CRD reportable segment) |  | 37% |  | *
Customer 3 (MID reportable segment) |  | * |  | 33%
_________________________________________
Sales, net |
Concentration Risk [Line Items] |
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, 2015 and 2014, respectively, was as follows:
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
Customer |  | 2015 |  | 2014 |  | 2015 |  | 2014
Customer A (MID and CRD reportable segments) |  | 20 | % |  | 22 | % |  | 21 | % |  | 20 | %
Customer B (MID reportable segment) |  | 21 | % |  | 17 | % |  | 18 | % |  | 16 | %
Customer C (MID reportable segment) |  | 13 | % |  | 14 | % |  | 13 | % |  | 13 | %

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