Fair Value Measurements - Schedule of Change in Fair Value (Details) - USD ($)	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2022
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loan Received		$ 12,172,969
Adjustment to Fair Value Mark to Market		(4,091,610)
Ending Balance	$ 8,081,359	8,081,359
Secured Convertible Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loan Received		6,000,000
Adjustment to Fair Value Mark to Market	(700,000)	(2,397,000)
Ending Balance	3,603,000	3,603,000
Bridge Loan
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loan Received		6,172,969
Adjustment to Fair Value Mark to Market	400,000	(1,694,610)
Ending Balance	$ 4,478,359	$ 4,478,359

Fair value measurement with unobservable inputs reconciliations recurring basis liability loan received.

No definition available.

Name:	acer_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityLoanReceived
Namespace Prefix:	acer_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Definition

Amount of increase (decrease) of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

+ Details

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

+ Details

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

- Details

Name:	us-gaap_LongtermDebtTypeAxis=acer_SecuredConvertibleNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_BridgeLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: