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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