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Working capital advances (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Working capital advances [Abstract] |  |
Provision for doubtful advances | $ 0 | $ 0

X
- Definition Amount of expense related to write-down of advances to the amount expected to be collected. + References No definition available. + Details
Name: | asc_ProvisionForDoubtfulAdvances
Namespace Prefix: | asc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | asc_WorkingCapitalAdvancesAbstract
Namespace Prefix: | asc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration