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Information Concerning Product Lines, Geographic Information and Revenue Concentration
 6 Months Ended
Jun. 28, 2015
Segment Reporting [Abstract]  
Information concerning product lines, geographic information and revenue concentration
Information Concerning Product Lines, Geographic Information and Revenue Concentration
 
The Company identifies its business segment based on business activities, management responsibility and geographic location. For all periods presented, the Company operated in a single reportable business segment.
 
The following is a breakdown of revenue by product line (in thousands):
 
 
Three Months Ended
 
Six Months Ended
 
June 28,
2015
 
June 29,
2014
 
June 28, 2015
 
June 29,
2014
Revenue by product line (1):
 

 
 

 
 
 
 
New products
$
2,953

 
$
4,482

 
$
7,097

 
$
13,398

Mature products
2,020

 
2,354

 
4,035

 
4,602

Total revenue
$
4,973

 
$
6,836

 
$
11,132

 
$
18,000

_________________
 
(1)                   For all periods presented:  New products include all products manufactured on 180 nanometer or smaller semiconductor processes. Mature products include all products produced on semiconductor processes larger than 180 nanometers.

The following is a breakdown of revenue by shipment destination (in thousands):
 
 
Three Months Ended
 
Six Months Ended
 
June 28,
2015
 
June 29,
2014
 
June 28, 2015
 
June 29, 2014
Revenue by geography:
 

 
 

 
 
 
 
Asia Pacific (1)
$
3,482

 
$
4,511

 
$
7,290

 
$
13,839

North America (2)
1,087

 
973

 
2,929

 
2,073

Europe
404

 
1,352

 
913

 
2,088

Total revenue
$
4,973

 
$
6,836

 
$
11,132

 
$
18,000


___________

(1)     Asia Pacific includes revenue from South Korea of $2.1 million, or 42%, of total revenue and $2.7 million, or 39%, of total revenue for the quarters ended June 28, 2015 and June 29, 2014, respectively. For the six months ended June 28, 2015 and June 29, 2014, revenue from South Korea was $4.5 million, or 40%, of total revenue and $10.4 million, or 58%, respectively.
(2)     North America includes revenue from the United States of $1.0 million, or 20%, of total revenue and $891,000, or 13%, for the quarters ended June 28, 2015 and June 29, 2014, respectively. For the six months ended June 28, 2015 and June 29, 2014, revenue from United States was $2.8 million, or 25%, and $2.0 million, or 11%, respectively.

The following distributors and customers accounted for 10% or more of the Company's revenue for the periods presented:
 
Three Months Ended
 
Six Months Ended
 
June 28,
2015
 
June 29,
2014
 
June 28, 2015
 
June 29, 2014
Distributor "A"
24
%
 
18
%
 
27
%
 
12
%
Customer "B"
14
%
 
11
%
 
15
%
 
*

Customer "G"
41
%
 
40
%
 
40
%
 
59
%

 
*
Represents less than 10% of revenue for the period presented.
 
The following distributors and customers accounted for 10% or more of the Company's accounts receivable as of the dates presented:
 
June 28,
2015
 
December 28,
2014
Distributor "A"
39
%
 
34
%
Customer "G"
38
%
 
28
%

As of June 28, 2015, less than 10% of the Company's long-lived assets, including property and equipment and other assets, were located outside the United States.