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Segment Information (Geographic Information) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenue, net	$ 16,285	$ 17,391	$ 46,139	$ 47,781
Japan
Revenue, net	10,321	12,024	26,681	32,090
Taiwan
Revenue, net	3,034	2,939	7,632	7,883
United States
Revenue, net	1,056	410	5,836	1,177
China
Revenue, net	741	687	2,584	1,787
Europe
Revenue, net	445	541	1,264	1,879
Korea
Revenue, net	206	306	787	1,319
Other
Revenue, net	$ 482	$ 484	$ 1,355	$ 1,646

X

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

Name:	us-gaap_SalesRevenueNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration