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Disclosure - Financial Information of Registrant (Parent Company) (Detail 1) Sheet http://www.acceptanceinsurance.com/20141231/taxonomy/role/DisclosureFinancialInformationOfRegistrantParentCompanyDetail1 Financial Information of Registrant (Parent Company) (Detail 1) false false R84.htm 100830 - Disclosure - Financial Information of Registrant (Parent Company) (Detail 2) Sheet http://www.acceptanceinsurance.com/20141231/taxonomy/role/DisclosureFinancialInformationOfRegistrantParentCompanyDetail2 Financial Information of Registrant (Parent Company) (Detail 2) false false All Reports Book All Reports Element us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount had a mix of decimals attribute values: -5 -3. 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