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Risk Management (Details) | 12 Months Ended
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Dec. 31, 2013 Bank Charterer Vessel
Concentration Risk [Line Items] |
Number of vessels in operation | 8
Assets [Member] | Customer Concentration Risk [Member] |
Concentration Risk [Line Items] |
Number of banks deposits held | 2
Potential number of charterers employing all vessels | 1
Number of vessels in operation | 8
Number of charterers employment | 5

X
- Definition The number of banks deposits are held. + References No definition available. + Details
Name: | asc_NumberOfBanksDepositsHeld
Namespace Prefix: | asc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of charterers employing vessels as of the balance sheet date. + References No definition available. + Details
Name: | asc_NumberOfCharterersEmployingVessels
Namespace Prefix: | asc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of vessels in operations. + References No definition available. + Details
Name: | asc_NumberOfVesselsInOperation
Namespace Prefix: | asc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The potential number of charterers employing all vessels at any given point in time during the period. + References No definition available. + Details
Name: | asc_PotentialNumberOfCharterersEmployingAllVessels
Namespace Prefix: | asc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ConcentrationRiskLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration