2.4.0.8040902 - Disclosure - Shareholders' Equity (Issued Share Capital) (Details)truefalseIn Thousands, except Share data, unless otherwise specifiedfalse1false USDfalsefalse$AS_OF_Jun30_2013http://www.sec.gov/CIK0001163348instant2013-06-30T00:00:000001-01-01T00:00:00SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false CHFfalsefalseAS_OF_Jun30_2013http://www.sec.gov/CIK0001163348instant2013-06-30T00:00:000001-01-01T00:00:00CHF_PerShareDividehttp://www.xbrl.org/2003/iso4217CHFiso4217http://www.xbrl.org/2003/instancesharesxbrli0CHFCHF3false USDfalsefalse$AS_OF_Dec31_2012http://www.sec.gov/CIK0001163348instant2012-12-31T00:00:000001-01-01T00:00:00SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDollarStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4false CHFfalsefalseAS_OF_Dec31_2012http://www.sec.gov/CIK0001163348instant2012-12-31T00:00:000001-01-01T00:00:00CHF_PerShareDividehttp://www.xbrl.org/2003/iso4217CHFiso4217http://www.xbrl.org/2003/instancesharesxbrli0CHFCHF1true 1us-gaap_StockholdersEquityNoteAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Shareholders' Equity [Abstract]2false 2us-gaap_CommonStockSharesIssuedus-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse3542942335429423falsefalsefalse2truefalsefalse3542942335429423falsefalsefalse3truefalsefalse3636986836369868falsefalsefalse4truefalsefalse3636986836369868falsefalsefalsexbrli:sharesItemTypesharesTotal number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 false1Common shares, issued3false 2us-gaap_CommonStockParOrStatedValuePerShareus-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2truefalsefalse12.3012.30CHFfalsetruefalse3falsefalsefalse00falsefalsefalse4truefalsefalse12.6412.64CHFfalsetruefalsenum:perShareItemTypedecimalFace amount or stated value of common stock per share; generally not indicative of the fair market value per share.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 false3Common shares, par value4false 2us-gaap_CommonStockValueus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse430397000430397USD$falsetruefalse2falsefalsefalse00falsefalsefalse3truefalsefalse454980000454980USD$falsetruefalse4falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 false2Common stock valuefalseShareholders' Equity (Issued Share Capital) (Details)ThousandsNoRoundingNoRoundingUnKnowntruefalsetrueSheethttp://www.awac.com/role/ShareholdersEquityIssuedShareCapitalDetails44