XML 86 R64.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Related Parties (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
SFC [Member] |  |  |
Related Parties (Textual) [Abstract] |  |  |
Aggregate annual rent for leased aircraft usage | $ 0.9 | $ 0.6 | $ 0.4
Subsidiary of SFC [Member] |  |  |
Related Parties (Textual) [Abstract] |  |  |
Aggregate annual rent for leased aircraft usage |  | 0.4 | 0.6
Oil Chem Research Company [Member] |  |  |
Related Parties (Textual) [Abstract] |  |  |
Purchase from related party | $ 1.9 | $ 1.5 | $ 1.4

X
- Details
Name: | sah_RelatedPartiesTextualAbstract
Namespace Prefix: | sah_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Rental expense incurred for leased assets including furniture and equipment which has not been recognized in costs and expenses applicable to sales and revenues; for example, cost of goods sold or other operating costs and expenses. + References No definition available. + Details
Name: | us-gaap_LeaseAndRentalExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References No definition available. + Details
Name: | us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration