Other Offering Expenses

No definition available.

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- Definition

Shares Authorized

+ References

No definition available.

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- Definition

Underwriting discounts and commissions.

+ References

No definition available.

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-Name Regulation S-X (SX)

-Number 210

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- Definition

The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

+ References

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- Definition

The cash inflow associated with the amount received from entity's first offering of stock to the public.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

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-Publisher FASB

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-Topic 230

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-Section 45

-Paragraph 14

-Subparagraph (a)

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- Definition

Amount per share or per unit of equity securities issued by non-development stage entity.

+ References

No definition available.

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- Definition

Number of shares issued during the period as a result of the conversion of convertible securities.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

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- Definition

Number of new stock issued during the period.

+ References

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Stockholders' Equity (Deficit) - Additional Information (Detail) (USD $)	12 Months Ended	0 Months Ended
	Dec. 31, 2014	Jun. 18, 2014	Dec. 31, 2013
Stockholder Equity [Line Items]
Net proceeds	$ 74,712,000
Total number of shares authorized	130,000,000aspn_SharesAuthorized
Common stock, shares authorized	125,000,000us-gaap_CommonStockSharesAuthorized		255,702us-gaap_CommonStockSharesAuthorized
Preferred stock, shares authorized	5,000,000us-gaap_PreferredStockSharesAuthorized		0us-gaap_PreferredStockSharesAuthorized
Convertible Preferred Stock [Member]
Stockholder Equity [Line Items]
Common shares issued upon conversion of securities		115,982
Convertible Debt Securities [Member]
Stockholder Equity [Line Items]
Common shares issued upon conversion of securities		15,319,034
IPO [Member]
Stockholder Equity [Line Items]
Initial public offering, common stock shares		7,500,000
Initial public offering, common stock price per share		11.00
Net proceeds		74,700,000
Underwriting discounts and commissions		4,300,000
Other offering expenses		3,500,000