Subsequent Events (Details) - Subsequent Event - Collaborative Arrangement $ in Millions	Oct. 28, 2020 USD ($) numberOfDays Segment
Subsequent Event [Line Items]
Upfront payment receivable	$ 50.0
Collaborative agreement, period after agreement execution to receive upfront payment \| Segment	30
Contingent payments receivable upon achievement of development and regulatory milestones (up to)	$ 39.0
Contingent payments receivable upon achievement of commercial milestones (up to)	$ 60.0
Royalty percentage (in excess of)	25.00%
Company's share of clinical trial costs, percentage	50.00%
Collaborative agreement expiration, period after first commercial sale of product	12 years
Collaborative agreement, termination by counterparty, effective after written notice period \| numberOfDays	180
Repayment of upfront payment upon termination, percentage	85.00%
Reimbursement of development expenses upon termination, percentage	50.00%

Amount Receivable, Upon Execution of Collaboration Agreement

No definition available.

Name:	aeri_AmountReceivableUponExecutionOfCollaborationAgreement
Namespace Prefix:	aeri_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Collaborative Agreement, Amount Receivable Upon Achievement Of Certain Commercial Milestones

+ References

No definition available.

+ Details

Name:	aeri_CollaborativeAgreementAmountReceivableUponAchievementOfCertainCommercialMilestones
Namespace Prefix:	aeri_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Collaborative Agreement, Amount Receivable Upon Achievement Of Certain Development And Regulatory Milestones

+ References

No definition available.

+ Details

Name:	aeri_CollaborativeAgreementAmountReceivableUponAchievementOfCertainDevelopmentAndRegulatoryMilestones
Namespace Prefix:	aeri_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Collaborative Agreement, Company's Share Of Collaborative Agreement Costs, Percentage

+ References

No definition available.

+ Details

Name:	aeri_CollaborativeAgreementCompanysShareOfCollaborativeAgreementCostsPercentage
Namespace Prefix:	aeri_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Collaborative Agreement, Expiration, Period After First Commercial Sale Of Product

+ References

No definition available.

+ Details

Name:	aeri_CollaborativeAgreementExpirationPeriodAfterFirstCommercialSaleOfProduct
Namespace Prefix:	aeri_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Collaborative Agreement, Period After Agreement Execution To Receive Upfront Payment

+ References

No definition available.

+ Details

Name:	aeri_CollaborativeAgreementPeriodAfterAgreementExecutionToReceiveUpfrontPayment
Namespace Prefix:	aeri_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Collaborative Agreement, Reimbursement Of Development Expenses Upon Termination, Percentage

+ References

No definition available.

+ Details

Name:	aeri_CollaborativeAgreementReimbursementOfDevelopmentExpensesUponTerminationPercentage
Namespace Prefix:	aeri_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Collaborative Agreement, Repayment Of Upfront Payment Upon Termination, Percentage

+ References

No definition available.

+ Details

Name:	aeri_CollaborativeAgreementRepaymentOfUpfrontPaymentUponTerminationPercentage
Namespace Prefix:	aeri_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Collaborative Agreement, Royalty Percentage

+ References

No definition available.

+ Details

Name:	aeri_CollaborativeAgreementRoyaltyPercentage
Namespace Prefix:	aeri_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Collaborative Agreement, Termination By Counterparty, Effective After Written Notice Period

+ References

No definition available.

+ Details

Name:	aeri_CollaborativeAgreementTerminationByCounterpartyEffectiveAfterWrittenNoticePeriod
Namespace Prefix:	aeri_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=us-gaap_CollaborativeArrangementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: