Inventories and Related Notes Payable - Floor Plan - Components of Inventories (Detail) - USD ($) $ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Inventory Disclosure [Abstract] | ||
| New vehicles | $ 1,161,490 | $ 924,818 |
| Used vehicles | 251,103 | 214,015 |
| Service loaners | 121,946 | 112,520 |
| Parts, accessories and other | 65,042 | 60,349 |
| Net inventories | $ 1,599,581 | $ 1,311,702 |
| X | ||||||||||
- Definition Inventory new vehicles. No definition available.
|
| X | ||||||||||
- Definition Inventory service loaners. No definition available.
|
| X | ||||||||||
- Definition Inventory used vehicles. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date for elements of machinery or equipment held for the purpose of replacing similar parts in the course of repair or maintenance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|