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Note 8 - Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2013
Stockholders' Equity Note [Abstract] |
Class of Treasury Stock [Table Text Block] |
|  | Year Ended December 31, |
|  | 2013 |  |  | 2012 |  |  | 2011 |
Shares repurchased (1) |  |  | 127,900 |  |  |  | 848,092 |  |  |  | 716,431 |
Total purchase price (in thousands) |  | $ | 5,213 |  |  | $ | 20,698 |  |  | $ | 12,389 |
Average purchase price per share |  | $ | 40.76 |  |  | $ | 24.41 |  |  | $ | 17.29 |
Schedule of Dividends Payable [Table Text Block] |
Quarter declared |  | Dividend amount per Class A and Class B share |  |  | Total amount of dividend (in thousands) |
2011 |  |  |  |  |  |  |  |
First quarter |  | $ | 0.05 |  |  | $ | 1,316 |
Second quarter |  |  | 0.07 |  |  |  | 1,851 |
Third quarter |  |  | 0.07 |  |  |  | 1,838 |
Fourth quarter |  |  | 0.07 |  |  |  | 1,817 |
2012 |  |  |  |  |  |  |  |
First quarter |  | $ | 0.07 |  |  | $ | 1,815 |
Second quarter |  |  | 0.10 |  |  |  | 2,583 |
Third quarter |  |  | 0.10 |  |  |  | 2,545 |
Fourth quarter(1) |  |  | 0.20 |  |  |  | 5,123 |
2013 |  |  |  |  |  |  |  |
First quarter |  | $ | - |  |  | $ | - |
Second quarter |  |  | 0.13 |  |  |  | 3,356 |
Third quarter |  |  | 0.13 |  |  |  | 3,363 |
Fourth quarter |  |  | 0.13 |  |  |  | 3,366 |
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] |
|  | Year Ended December 31, |  | Affected Line Item in the Consolidated
|  | 2013 |  |  | 2012 |  |  | 2011 |  | Statement of Operations
Loss on cash flow hedges |  | $ | (740 | ) |  | $ | (1,413 | ) |  | $ | (1,899 | ) | Floor plan interest expense
Income tax benefits |  |  | 283 |  |  |  | 541 |  |  |  | 727 |  | Income tax provision
Loss on cash flow hedges, net |  | $ | (457 | ) |  | $ | (872 | ) |  | $ | (1,172 | ) |

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