v2.4.0.6

SUBSEQUENT EVENTS (DETAILS) (Founders Warrants [Member]) | 12 Months Ended
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Dec. 31, 2011
Founders Warrants [Member] |
Warrants Exercised [Line Items] |
Number of shares issued during the period on exercise of warrants | 12,893,483
Number of warrants exercised during the period | 19,827,760

X
- Definition Number of new shares issued during the period due to exercise of warrants. + References No definition available. + Details
Name: | axs_StockIssuedDuringPeriodSharesWarrantExercise
Namespace Prefix: | axs_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of warrants exercised during period; this number may differ from the number of common shares issued during the same period if warrantholders opt to exercise on a cashless basis. + References No definition available. + Details
Name: | axs_WarrantsExercised
Namespace Prefix: | axs_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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