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Fair Value Measurements - Assets or Liabilities Measured at Fair Value on a Non-Recurring basis (Detail) (Fair Value, Measurements, Nonrecurring [Member], USD $)
In Thousands, unless otherwise specified |
12 Months Ended |
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Dec. 31, 2014
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| Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] | |
| Long-lived assets held and used | $ 799,319us-gaap_PropertyPlantAndEquipmentFairValueDisclosure |
| Goodwill | 475,929us-gaap_GoodwillFairValueDisclosure |
| Franchise assets | 77,100us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwillFairValueDisclosure |
| Total Gain (loss) on long-lived assets held and used | (4,394)sah_GainLossOnPropertyPlantAndEquipment |
| Total Gain (loss) on franchise assets | (2,200)sah_GainLossOnIndefiniteLivedFranchiseRights |
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Significant Unobservable Inputs (Level 3) [Member]
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| Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] | |
| Long-lived assets held and used |
799,319us-gaap_PropertyPlantAndEquipmentFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember |
| Goodwill |
475,929us-gaap_GoodwillFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember |
| Franchise assets |
$ 77,100us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwillFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsNonrecurringMember |
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- Details
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- Definition
Gain loss on indefinite lived franchise rights. No definition available.
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- Definition
Gain loss on property plant and equipment. No definition available.
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- Definition
Fair value portion of asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Fair value portion of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Fair value portion of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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