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Inventories (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Inventory [Line Items] |  |
New Vehicles Inventory, Gross | $ 1,156,383 | $ 1,262,797
Used Vehicles Inventory, Gross | 294,812 | 275,508
Rental Vehicles Inventory, Gross | 131,080 | 134,509
Parts, Accessories and Other Inventory, Gross | 77,762 | 72,917
Inventory, Gross | 1,660,037 | 1,745,731
Summary of inventories |  |
Lower of cost or market reserves | $ (8,222) | $ (7,980)

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