XML 30 R23.htm IDEA: XBRL DOCUMENT v3.24.3

Debt - Additional information (Details) $ in Millions				9 Months Ended
	Jun. 15, 2023 USD ($)	Aug. 09, 2022 USD ($)	Aug. 05, 2022 USD ($) item subsidiary	Sep. 30, 2024 USD ($) item facility	Jun. 25, 2024 facility
Number of loan facilities | facility				3	2
Number of vessels with loans | item				19
Fair market Value Percentage				40.00%
Minimum [Member]
Required Minimum Solvency Covenant				30.00%
Required minimum cash and cash equivalents				$ 18.8
Cash Percentage				60.00%
Percentage Outstanding Debt				5.00%
Fair market Value Percentage				130.00%
Minimum Net Worth Required				$ 200.0
Nordea SEB Revolving Facility
Number of vessels with loans | item				6
Number of vessels previously financed under lease arrangments | item			12
Number of subsidiaries | subsidiary			12
Line of Credit Facility, Maximum Borrowing Capacity			$ 185.0
Debt Instrument, Basis Spread on Variable Rate				2.50%
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]				us-gaap:SecuredOvernightFinancingRateSofrMember
Number of days to provide notice for draw down or repayment of debt				5 days
Revolving credit facility drawn down				$ 20.0
Revolving credit facility undrawn				126.7
ABN CACIB Joint Bank Facility
Number of vessels with loans | item			7
Number of vessels previously financed under lease arrangments | item			3
Debt Instrument, Basis Spread on Variable Rate			2.50%
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]			us-gaap:SecuredOvernightFinancingRateSofrMember
Revolving credit facility drawn down			$ 108.0
ABN AMRO Revolving Facility
Line of Credit Facility, Maximum Borrowing Capacity		$ 15.0
Debt Instrument, Basis Spread on Variable Rate		3.90%
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]		us-gaap:SecuredOvernightFinancingRateSofrMember
Revolving credit facility drawn down				2.5
Revolving credit facility undrawn				12.5
ABN CACIB Revolving Bank Facility
Number of subsidiaries | subsidiary			7
Percentage of outstanding balance converted into a revolving credit facility	50.00%
Percentage continuing as a term loan facility	50.00%
Revolving credit facility drawn down				0.0
Revolving credit facility undrawn				$ 81.7
Outstanding balance	$ 49.2

X

- Definition

Percentage of cash.

+ References

No definition available.

+ Details

Name:	asc_CashPercentage
Namespace Prefix:	asc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Percentage of fair market value.

+ References

No definition available.

+ Details

Name:	asc_FairMarketValuePercentage
Namespace Prefix:	asc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The minimum net worth required under the debt covenant as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	asc_MinimumNetWorthRequired
Namespace Prefix:	asc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Number of days within which the company has to provide notice for drawing down or repayment of debt.

+ References

No definition available.

+ Details

Name:	asc_NumberOfDaysToProvideNoticeForDrawDownOrRepaymentOfDebt
Namespace Prefix:	asc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of finance lease facility in operations.

+ References

No definition available.

+ Details

Name:	asc_NumberOfFinanceLeaseFacility
Namespace Prefix:	asc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents number of subsidiaries.

+ References

No definition available.

+ Details

Name:	asc_NumberOfSubsidiaries
Namespace Prefix:	asc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of vessels employed by the company

+ References

No definition available.

+ Details

Name:	asc_NumberOfVesselsEmployed
Namespace Prefix:	asc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of vessels previously financed under lease arrangments.

+ References

No definition available.

+ Details

Name:	asc_NumberOfVesselsPreviouslyFinanced
Namespace Prefix:	asc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents percentage of the outstanding balance under the facility converted into a revolving credit facility.

+ References

No definition available.

+ Details

Name:	asc_PercentageOfOutstandingBalanceRevolvingCreditFacility
Namespace Prefix:	asc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents percentage of the outstanding balance under the facility continuing as a term loan facility.

+ References

No definition available.

+ Details

Name:	asc_PercentageOfOutstandingBalanceTermLoanFacility
Namespace Prefix:	asc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Percentage of outstanding debt.

+ References

No definition available.

+ Details

Name:	asc_PercentageOutstandingDebt
Namespace Prefix:	asc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The minimum cash balance required under the debt covenants as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	asc_RequiredMinimumCashBalance
Namespace Prefix:	asc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The minimum solvency required under the debt covenants as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	asc_RequiredMinimumSolvencyCovenant
Namespace Prefix:	asc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- 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

X

- Definition

Indicates type of variable interest rate on debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 470
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477734/942-470-50-3

+ Details

Name:	us-gaap_DebtInstrumentVariableInterestRateTypeExtensibleEnumeration
Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions 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://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/1943274/2147478546/942-210-S99-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

+ Details

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

X

- Definition

Average amount borrowed under the credit facility during the period.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityAverageOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

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

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(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

X

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

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

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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