Acquisitions - Intangible Assets (Details) (Niotan Incorporated, USD $) In Thousands, unless otherwise specified	0 Months Ended
Feb. 21, 2012
Schedule of the amounts assigned to intangible assets
Fair Value	$ 22,420
Developed technology
Schedule of the amounts assigned to intangible assets
Fair Value	22,300
Useful Life (years)	18 years
Software
Schedule of the amounts assigned to intangible assets
Fair Value	$ 120
Useful Life (years)	4 years

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration