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Operating Leases - Additional Information (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Property Subject to or Available for Operating Lease [Line Items]  
Initial lease term of certain distribution centers and manufacturing and store locations, minimum (in months) 1 month
Initial lease term of certain distribution centers and manufacturing and store locations, maximum (in months) 60 months
Initial lease terms of most store locations, minimum (in months) 36 months
Initial lease terms of most store locations, maximum (in months) 48 months
Leasehold improvements, net book value $ 1,827
Amortization period of leasehold improvements on operating leases (in months) 36 months
Terms of semi-tractor leases (in months) 36 months
Term of non-cancellable pick-up leases (in years) 1 year
Renewal options for non-cancellable pick-up leases, maximum (in months) 72 months
Average pick-up lease term, minimum (in months) 28 months
Average pick-up lease term, maximum (in months) 36 months
Leased Vehicles [Member]
  
Property Subject to or Available for Operating Lease [Line Items]  
Aggregate residual value guarantee 44,720
Loss on disposal reserve $ 36