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Operating Leases - Additional Information (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014
Property Subject to or Available for Operating Lease [Line Items] |
Leasehold improvements, net book value | $ 1,732 us-gaap_PropertySubjectToOrAvailableForOperatingLeaseNet
Amortization period of leasehold improvements on operating leases | 36 months
Certain Store Locations [Member] | Minimum [Member] |
Property Subject to or Available for Operating Lease [Line Items] |
Average lease term | 1 month
Certain Store Locations [Member] | Maximum [Member] |
Property Subject to or Available for Operating Lease [Line Items] |
Average lease term | 84 months
Most Store Locations [Member] | Minimum [Member] |
Property Subject to or Available for Operating Lease [Line Items] |
Average lease term | 36 months
Most Store Locations [Member] | Maximum [Member] |
Property Subject to or Available for Operating Lease [Line Items] |
Average lease term | 48 months
Semi-Tractor [Member] | Minimum [Member] |
Property Subject to or Available for Operating Lease [Line Items] |
Average lease term | 48 months
Semi-Tractor [Member] | Maximum [Member] |
Property Subject to or Available for Operating Lease [Line Items] |
Average lease term | 60 months
Leased Vehicles [Member] |
Property Subject to or Available for Operating Lease [Line Items] |
Term of non-cancellable pick-up leases | 1 year
Aggregate residual value guarantee | $ 50,130 us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis = us-gaap_VehiclesMember
Leased Vehicles [Member] | Minimum [Member] |
Property Subject to or Available for Operating Lease [Line Items] |
Average lease term | 28 months
Leased Vehicles [Member] | Maximum [Member] |
Property Subject to or Available for Operating Lease [Line Items] |
Average lease term | 36 months
Renewal options for non-cancellable pick-up leases, maximum | 72 months

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- Definition Term Of Noncancellable Lease + References No definition available. + Details
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- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
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- Definition Term of the lessee's leasing arrangement renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Details
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- Definition The amount of property, by major property class, net of accumulated depreciation, subject to or available for lease as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718 + Details
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- Details
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