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

Built date of the fleet.

No definition available.

Name:	asc_BuiltDate
Namespace Prefix:	asc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The total sum of weight that the vessel can carry on a defined load line.

No definition available.

Name:	asc_DeadWeight
Namespace Prefix:	asc_
Data Type:	dtr-types:massItemType
Balance Type:	na
Period Type:	duration

The total sum of weight that the vessel can carry on a defined load line excluding time charter-in arrangement.

No definition available.

Name:	asc_DeadWeightExcludingTimeCharterInArrangement
Namespace Prefix:	asc_
Data Type:	dtr-types:massItemType
Balance Type:	na
Period Type:	duration

Pertains to the IMO (International Maritime Organization) product and chemical tanker.

No definition available.

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

The number of fleet during the period excluding time charter-in arrangement, which may include crude oil tankers and new vessels under construction to be used in the normal conduct of business and not intended for resale.

No definition available.

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

Number of fleet under a time charter-in arrangement.

No definition available.

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

Number of fleet Marshall Island flag.

No definition available.

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

Number of fleet Singapore flag.

No definition available.

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

N/A

No definition available.

Name:	asc_OrganizationConsolidationAndPresentationOfFinancialStatementsLineItems
Namespace Prefix:	asc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Specification type of vessel built.

No definition available.

Name:	asc_SpecificationTypeOfVessel
Namespace Prefix:	asc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The total number of fleet during the period, which may include crude oil tankers and new vessels under construction to be used in the normal conduct of business and not intended for resale.

No definition available.

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

Type of vessel built.

No definition available.