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- Definition

Number of individual customers accounting for more than ten percent of accounts receivable.

+ References

No definition available.

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- Definition

Number of individual customers accounting for more than ten percent of net product sales.

+ References

No definition available.

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- Definition

Schedule Of Significant Accounting Policies [Line Items]

+ References

No definition available.

+ Details

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- Definition

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in equity securities classified as available-for-sale.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (b)

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- Definition

Amount of equity securities categorized neither as held-to-maturity nor as trading.

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-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

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-Subparagraph (b)

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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- Definition

Amount of deferred revenue recognized for transactions arising during the current reporting period. Deferred revenue is a liability as of the balance sheet date related to a revenue producing activity for which revenue has not yet been recognized. Generally, an Entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

+ References

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- Definition

Total carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue or other forms of income in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer.

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-Topic 605

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-Section A

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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

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- Definition

Balance held at close of period in number of shares.

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- Definition

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

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- 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.

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Significant Accounting Policies - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($) Customer shares	Sep. 30, 2014 USD ($) Customer	Sep. 30, 2015 USD ($) Customer Segment shares	Sep. 30, 2014 USD ($) Customer	Dec. 31, 2014 USD ($)
Schedule Of Significant Accounting Policies [Line Items]
Inventory adjustments	$ 217,000	$ 360,000	$ 462,000	$ 3,500,000
Aggregate gross selling price of shipments			23,300,000
Payment received on shipment	21,900,000		$ 21,900,000
Number Of customers accounted for accounts receivable \| Customer			1	1
Number of operating segments \| Segment			1
Outside the United States
Schedule Of Significant Accounting Policies [Line Items]
Long lived assets	1,400,000		$ 1,400,000		$ 1,400,000
Regenxbio Inc
Schedule Of Significant Accounting Policies [Line Items]
Accumulated other comprehensive income, before tax	15,138,000		15,138,000
Available for sale securities carrying value	$ 0		$ 0
Common Stock \| Regenxbio Inc
Schedule Of Significant Accounting Policies [Line Items]
Marketable securities consist shares of common stock \| shares	687,139		687,139
Net product revenue
Schedule Of Significant Accounting Policies [Line Items]
Number of customers accounted for net product sales \| Customer	1	1	1	1
Net product revenue \| Customer One Product Sales
Schedule Of Significant Accounting Policies [Line Items]
Customers concentration risk, percentage	74.00%	72.00%	76.00%	67.00%
Net product revenue \| Outside the United States
Schedule Of Significant Accounting Policies [Line Items]
Customers concentration risk, percentage	27.00%	28.00%	24.00%	33.00%
Net product revenue \| Outside the United States \| Germany
Schedule Of Significant Accounting Policies [Line Items]
Customers concentration risk, percentage	9.00%	17.00%	9.00%	5.00%
Accounts receivable \| Customer One Product Sales
Schedule Of Significant Accounting Policies [Line Items]
Customers concentration risk, percentage			61.00%	75.00%
Maximum
Schedule Of Significant Accounting Policies [Line Items]
Capitalized costs, amortization period maximum			17 years