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Commitments and Contingencies (Details 2) (USD $)	1 Months Ended			12 Months Ended
	Nov. 30, 2013	May 31, 2011	Oct. 31, 2000	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Leases, related disclosures
Rent expense, net				$ 800,000	$ 600,000	$ 600,000
Lease term for research and development facility			25 years
Term of sublease	1 year
Sublease income recognized				$ 23,000
Extended term of lease for office space		5 years

X

- Definition

Represents information about term of sublease.

+ References

No definition available.

+ Details

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X

- Details

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X

- Definition

Term of the lessee's leasing arrangement renewal, 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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X

- Definition

Term of the lessee's leasing arrangement, 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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X

- Definition

The amount of revenue recognized for the period under subleasing arrangements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 55

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6584307&loc=d3e41620-112719

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X

- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717

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