Merger with Fairfax Financial Holdings Limited (Details Textual) (Merger Agreement with Fairfax, Fairfax Bermuda Holdings Limited and Indirect Wholly Owned Subsidiary [Member], USD $)	Jun. 02, 2013
Merger Agreement with Fairfax, Fairfax Bermuda Holdings Limited and Indirect Wholly Owned Subsidiary [Member]
Change in Control (Textual) [Abstract]
Cancelation of share value	$ 29.25
Termination fees on termination of Merger agreement	$ 9,186,000
Reimburse for transaction expenses maximum	$ 1,500,000

Maximum amount of transaction expenses recoverable on cancellation of merger agreement.

No definition available.

Name:	asi_MaximumAmountOfTransactionExpensesRecoverableOnCancellationOfMergerAgreement
Namespace Prefix:	asi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant