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Note 1 - Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended | 0 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2013 Revolving Credit Facility [Member] | Dec. 31, 2013 Revolving Credit Facility [Member] | Dec. 31, 2013 Minimum [Member] | Dec. 31, 2013 Maximum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |  |  |
Number of New Vehicle Brands | 28 |  |  |  |  |  |
Number of Stores | 94 |  |  |  |  |  |
Interest Costs Capitalized | $ 0.1 | $ 0.3 | $ 0.2 |  |  |  |
Advertising Expense | 39.6 | 31.9 | 23.9 |  |  |  |
Cooperative Advertising Amount | 11.8 | 9.6 | 7.8 |  |  |  |
Number of Financial Institutions |  |  |  | 13 | 13 |  |
Number of Manufacturer Affiliated Finance Companies |  |  |  | 7 | 7 |  |
Debt Instrument, Term |  |  |  | 5 years | 5 years |  |
Long-term Debt, Percentage Bearing Variable Interest, Amount | 833.8 |  |  |  |  |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate |  |  |  |  |  | 1.40% | 3.00%
Product Warranty Accrual | $ 0.5 | $ 0.3 |  |  |  |  |

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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 5 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(5)) -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
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