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Business Segments and Significant Customers (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 item	Jun. 30, 2011
Business Segments and Significant Customers
Number of business segments			1
Number of measurements of profitability			1
Business Segments
Revenues	$ 1,736	$ 3,292	$ 3,160	$ 6,831
United States
Business Segments
Revenues	1,036	1,088	1,617	2,434
Taiwan
Business Segments
Revenues	334	848	771	1,637
Japan
Business Segments
Revenues	299	916	693	2,210
Europe
Business Segments
Revenues	67	436	79	542
Other Asia
Business Segments
Revenues		$ 4		$ 8

X

- Definition

Represents the number of measurements of profitability of the entity.

+ References

No definition available.

+ Details

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X

- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

No definition available.

+ Details

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- Details

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- 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

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- Details

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