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Note 5 - Goodwill and Franchise Value (Tables) | 12 Months Ended
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Dec. 31, 2015
Notes Tables |
Schedule of Goodwill [Table Text Block] |
|  | Domestic |  |  | Import |  |  | Luxury |  |  | Consolidated |
Balance as of December 31, 2013 (1) |  | $ | 22,548 |  |  | $ | 16,797 |  |  | $ | 10,166 |  |  | $ | 49,511 |
Additions through acquisitions |  |  | 68,463 |  |  |  | 62,804 |  |  |  | 18,597 |  |  |  | 149,864 |
Balance as of December 31, 2014 (1) |  |  | 91,011 |  |  |  | 79,601 |  |  |  | 28,763 |  |  |  | 199,375 |
Additions through acquisitions |  |  | 6,892 |  |  |  | 5,029 |  |  |  | 2,170 |  |  |  | 14,091 |
Reductions through divestitures |  |  | — |  |  |  | (246 | ) |  |  | — |  |  |  | (246 | )
Balance as of December 31, 2015 (1) |  | $ | 97,903 |  |  | $ | 84,384 |  |  | $ | 30,933 |  |  | $ | 213,220 |
Schedule of Indefinite-Lived Intangible Assets [Table Text Block] |
|  | Franchise Value |
Balance as of December 31, 2013 |  | $ | 71,199 |
Additions through acquisitions |  |  | 80,233 |
Transfers to assets held for sale |  |  | (540 | )
Balance as of December 31, 2014 |  |  | 150,892 |
Additions through acquisitions |  |  | 6,843 |
Reductions through divestitures |  |  | (36 | )
Balance as of December 31, 2015 |  | $ | 157,699 |

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