Commitments and contingencies.

No definition available.

Name:	aspn_CommitmentsAndContingenciesLineItems
Namespace Prefix:	aspn_
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Period Type:	duration

- Definition

Credit limit percentage on prepayment balance.

+ References

No definition available.

+ Details

Name:	aspn_CreditLimitPercentageOnPrepaymentBalance
Namespace Prefix:	aspn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of credit facility increased maximum borrowing capacity.

+ References

No definition available.

+ Details

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Namespace Prefix:	aspn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Noninterest bearing prepayments aggregate amount.

+ References

No definition available.

+ Details

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Namespace Prefix:	aspn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of quarterly installment payable.

+ References

No definition available.

+ Details

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Namespace Prefix:	aspn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Secured debt commitment.

+ References

No definition available.

+ Details

Name:	aspn_SecuredDebtCommitment
Namespace Prefix:	aspn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Supply agreement expiration date.

+ References

No definition available.

+ Details

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Namespace Prefix:	aspn_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Line-of-Credit Arrangement
-URI http://asc.fasb.org/extlink&oid=6517033

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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- Details

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Balance Type:
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- Details

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- Details

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- Details

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Commitments and Contingencies - Additional Information (Detail)		3 Months Ended
	Jan. 27, 2017	Mar. 31, 2017 USD ($) Installment	Dec. 31, 2016 USD ($)
Silicon Valley Bank Credit Facility [Member] \| Loan Agreement [Member]
Commitments And Contingencies [Line Items]
Maximum increased borrowing amount		$ 20,000,000
Interest rate description		The interest rate applicable to borrowings may be based on the prime rate or LIBOR. Prime rate-based rates vary from prime rate plus 0.75% per annum to prime rate plus 1.75% per annum, while LIBOR-based rates vary from LIBOR plus 3.75% per annum to LIBOR plus 4.25% per annum.
Percentage of unused line fee		0.50%
Silicon Valley Bank Credit Facility [Member] \| Loan Agreement [Member] \| Revolving Credit Facility [Member]
Commitments And Contingencies [Line Items]
Extended maturity date	Jan. 28, 2018
Line of credit facility amount withdrawn		$ 0	$ 0
Letters of credit outstanding		2,400,000	$ 2,700,000
Line of credit facility borrowing capacity		$ 9,700,000
Minimum [Member] \| Prime Rate [Member] \| Silicon Valley Bank Credit Facility [Member] \| Loan Agreement [Member]
Commitments And Contingencies [Line Items]
Additional interest rate per annum		0.75%
Minimum [Member] \| LIBOR Rate [Member] \| Silicon Valley Bank Credit Facility [Member] \| Loan Agreement [Member]
Commitments And Contingencies [Line Items]
Additional interest rate per annum		3.75%
Maximum [Member] \| Prime Rate [Member] \| Silicon Valley Bank Credit Facility [Member] \| Loan Agreement [Member]
Commitments And Contingencies [Line Items]
Additional interest rate per annum		1.75%
Maximum [Member] \| LIBOR Rate [Member] \| Silicon Valley Bank Credit Facility [Member] \| Loan Agreement [Member]
Commitments And Contingencies [Line Items]
Additional interest rate per annum		4.25%
Supply and Joint Development Agreement [Member] \| BASF [Member]
Commitments And Contingencies [Line Items]
Supply agreement termination date		Dec. 31, 2027
Non-interest bearing prepayment, aggregate amount		$ 22,000,000
Number of quarterly installments \| Installment		8
Supply and Joint Development Agreement [Member] \| BASF [Member] \| Maximum [Member]
Commitments And Contingencies [Line Items]
Credit limit percentage on prepayment balance		25.30%
Supply and Joint Development Agreement [Member] \| BASF [Member] \| Third Party Lender [Member] \| Minimum [Member] \| Plant Two [Member]
Commitments And Contingencies [Line Items]
Secured debt, commitment		$ 30,000,000