Long-Term Debt - Long-Term Debt (Parenthetical) (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2014
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Dec. 31, 2013
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Debt Instrument [Line Items] | ||
Stated interest rate on debt agreement | 5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage | |
7.0% Senior Subordinated Notes Due 2022 [Member] | ||
Debt Instrument [Line Items] | ||
Stated interest rate on debt agreement |
7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = sah_SevenPercentSeniorSubordinateNoteDueTwoThousandTwentyTwoMember |
7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = sah_SevenPercentSeniorSubordinateNoteDueTwoThousandTwentyTwoMember |
Discount associated with notes |
$ 1.5us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_LongtermDebtTypeAxis = sah_SevenPercentSeniorSubordinateNoteDueTwoThousandTwentyTwoMember |
$ 1.6us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_LongtermDebtTypeAxis = sah_SevenPercentSeniorSubordinateNoteDueTwoThousandTwentyTwoMember |
5.0% Senior Subordinated Notes due 2023 [Member] | ||
Debt Instrument [Line Items] | ||
Stated interest rate on debt agreement |
5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = sah_FivePercentSeniorSubordinateNoteDueTwoThousandTwentyThreeMember |
5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = sah_FivePercentSeniorSubordinateNoteDueTwoThousandTwentyThreeMember |
Notes Payable to Finance Company [Member] | ||
Debt Instrument [Line Items] | ||
Interest on notes |
10.19%us-gaap_LongtermDebtWeightedAverageInterestRate / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember |
|
Premium associated with notes |
0.1us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember |
0.4us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember |
Notes Payable to Finance Company [Member] | Minimum [Member] | ||
Debt Instrument [Line Items] | ||
Stated interest rate on debt agreement |
9.52%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember / us-gaap_RangeAxis = us-gaap_MinimumMember |
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Notes Payable to Finance Company [Member] | Maximum [Member] | ||
Debt Instrument [Line Items] | ||
Stated interest rate on debt agreement |
10.52%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember / us-gaap_RangeAxis = us-gaap_MaximumMember |
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2011 Revolving Credit Facility [Member] | ||
Debt Instrument [Line Items] | ||
Interest rate |
2.00%us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd / us-gaap_LongtermDebtTypeAxis = sah_TwoThousandElevenRevolvingCreditFacilityMember |
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2014 Revolving Credit Facility [Member] | ||
Debt Instrument [Line Items] | ||
Interest rate |
2.25%us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd / us-gaap_LongtermDebtTypeAxis = sah_TwoThousandFourteenRevolvingCreditFacilityMember |
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Mortgage Notes Payable [Member] | ||
Debt Instrument [Line Items] | ||
Discount associated with notes |
$ 0.4us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_LongtermDebtTypeAxis = sah_MortgageNotesPayableMember |
$ 0.6us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_LongtermDebtTypeAxis = sah_MortgageNotesPayableMember |
Mortgage Loan at Fix Interest Rate [Member] | Minimum [Member] | ||
Debt Instrument [Line Items] | ||
Stated interest rate on debt agreement |
3.51%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = sah_MortgageLoanAtFixInterestRateMember / us-gaap_RangeAxis = us-gaap_MinimumMember |
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Mortgage Loan at Fix Interest Rate [Member] | Maximum [Member] | ||
Debt Instrument [Line Items] | ||
Stated interest rate on debt agreement |
7.03%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = sah_MortgageLoanAtFixInterestRateMember / us-gaap_RangeAxis = us-gaap_MaximumMember |
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Mortgage Loan at Variable Interest Rate [Member] | Minimum [Member] | ||
Debt Instrument [Line Items] | ||
Stated interest rate on debt agreement |
1.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_VariableRateAxis = sah_MortgageLoanAtVariableInterestRateMember |
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Mortgage Loan at Variable Interest Rate [Member] | Maximum [Member] | ||
Debt Instrument [Line Items] | ||
Stated interest rate on debt agreement |
3.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_VariableRateAxis = sah_MortgageLoanAtVariableInterestRateMember |
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- Definition
Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of debt premium that was originally recognized at the issuance of the instrument that has yet to be amortized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The effective interest rate at the end of the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average interest rate of long-term debt outstanding. No definition available.
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