The aggregate amount assigned to a major class of finite-lived intangible assets acquired either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 44

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Balance Type:	debit
Period Type:	instant

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
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- Definition

Gross amount, as of the balance sheet date, of the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable), in excess of the fair value of net assets acquired in one or more business combination transactions.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a,h)

-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

+ Details

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Balance Type:	debit
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- Definition

The accumulated impairment losses related to goodwill as of the balance sheet date.

+ References

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Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified																				9 Months Ended
	Sep. 30, 2012	Apr. 02, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2012 Developed technology [Member]	Apr. 02, 2012 Developed technology [Member]	Mar. 31, 2012 Developed technology [Member]	Sep. 30, 2012 Customer relationships [Member]	Apr. 02, 2012 Customer relationships [Member]	Mar. 31, 2012 Customer relationships [Member]	Sep. 30, 2012 Trademarks [Member]	Apr. 02, 2012 Trademarks [Member]	Mar. 31, 2012 Trademarks [Member]	Sep. 30, 2012 Non-competition agreement [Member]	Apr. 02, 2012 Non-competition agreement [Member]	Mar. 31, 2012 Non-competition agreement [Member]	Sep. 30, 2012 In-process research and development [Member]	Apr. 02, 2012 In-process research and development [Member]	Mar. 31, 2012 In-process research and development [Member]	Sep. 30, 2012 Minimum [Member]	Sep. 30, 2012 Maximum [Member]
Schedule of goodwill and intangible assets
Additions at cost		$ 8,730				$ 4,400			$ 3,000			$ 510			$ 410			$ 410
Carrying Amount	8,730				4,400			3,000			510			410			410
Accumulated Amortization	(549)				(220)			(150)			(76)			(103)			0
Net Carrying Amount	$ 8,181				$ 4,180			$ 2,850			$ 434			$ 307			$ 410
Estimated useful life																				2 years	10 years