Commitments and Contingencies - Summary of Prepayment Liability (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Prepayment Liability [Abstract]
Prepayment liability	$ 5,000	$ 9,728
Current portion of prepayment liability	$ (5,000)	(4,728)
Prepayment liability, long-term		$ 5,000

Contract with customer prepayment liability noncurrent.

No definition available.

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