Elected commitments under the credit facility.

No definition available.

Name:	ampy_CreditFacilityElectedCommitments
Namespace Prefix:	ampy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Current ratio.

+ References

No definition available.

+ Details

Name:	ampy_CurrentRatio
Namespace Prefix:	ampy_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

The current ratio as a financial covenant.

+ References

No definition available.

+ Details

Name:	ampy_CurrentRatioFinancialCovenant
Namespace Prefix:	ampy_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of net leverage ratio to be maintained under the debt instrument.

+ References

No definition available.

+ Details

Name:	ampy_DebtInstrumentCovenantNetLeverageRatio
Namespace Prefix:	ampy_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of reasonably anticipated projected production of hydrocarbons from proved developed producing reserves for each calendar month.

+ References

No definition available.

+ Details

Name:	ampy_DebtInstrumentPercentageOfHedgingRequirementOfReasonablyAnticipatedProjectedProductionOfHydrocarbons
Namespace Prefix:	ampy_
Data Type:	dtr-types:percentItemType
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

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
-Topic 210
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-4

+ Details

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

- Definition

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

+ References

No definition available.

+ Details

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

- 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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

+ Details

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

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
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

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

+ References

No definition available.

+ Details

Name:	us-gaap_UnamortizedDebtIssuanceExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=ampy_NewRevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=ampy_For24MonthPeriodFollowingEffectiveDateOfNewCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=ampy_For12MonthPeriodImmediatelyFollowingFirstPeriodMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Long-Term Debt - Additional Information (Detail) $ in Millions	Jul. 31, 2023 USD ($)	May 02, 2024 USD ($)	Mar. 31, 2024 USD ($)
Debt
Letters of credit outstanding			$ 0.0
Maximum
Debt
Current ratio			1.00
Revolving Credit Facility
Debt
Unamortized deferred financing costs			$ 4.1
New Revolving Credit Facility
Debt
Aggregate principal amount of loans outstanding			$ 115.0
Borrowing capacity	$ 150.0
Elected commitments	$ 135.0
Line of credit facility, unused capacity, commitment fee percentage (in %)	0.50%
Net debt leverage ratio	3.00
New Revolving Credit Facility \| For 24-month period following the effective date of the Revolving Credit Facility
Debt
Debt instrument, percentage of hedging requirement of reasonably anticipated projected production of hydrocarbons (in %)	75.00%
New Revolving Credit Facility \| For 12-month period immediately following the First Period
Debt
Debt instrument, percentage of hedging requirement of reasonably anticipated projected production of hydrocarbons (in %)	50.00%
New Revolving Credit Facility \| Subsequent Event
Debt
Borrowing capacity		$ 150.0
Elected commitments		$ 135.0
New Revolving Credit Facility \| Minimum
Debt
Current ratio	1.00		0.98
Current ratio financial covenant			1.00
New Revolving Credit Facility \| Maximum
Debt
Current ratio	1.00
Current ratio financial covenant			1.00
New Revolving Credit Facility \| Base rate \| Minimum
Debt
Debt instrument, basis spread on variable rate (in %)	2.00%
New Revolving Credit Facility \| Base rate \| Maximum
Debt
Debt instrument, basis spread on variable rate (in %)	3.00%
New Revolving Credit Facility \| SOFR \| Minimum
Debt
Debt instrument, basis spread on variable rate (in %)	3.00%
New Revolving Credit Facility \| SOFR \| Maximum
Debt
Debt instrument, basis spread on variable rate (in %)	4.00%