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Note 3 - Supplier and Customer Concentration (Details) - Major Suppliers and Dealership Agreements | 12 Months Ended
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Dec. 31, 2014
Peterbilt [Member] |
Note 3 - Supplier and Customer Concentration (Details) - Major Suppliers and Dealership Agreements [Line Items] |
Expiration Dates, by Distributor | August 2015 through May 2017
International [Member] |
Note 3 - Supplier and Customer Concentration (Details) - Major Suppliers and Dealership Agreements [Line Items] |
Expiration Dates, by Distributor | March 2016 through May 2020
Isuzu [Member] |
Note 3 - Supplier and Customer Concentration (Details) - Major Suppliers and Dealership Agreements [Line Items] |
Expiration Dates, by Distributor | Indefinite
Hino [Member] |
Note 3 - Supplier and Customer Concentration (Details) - Major Suppliers and Dealership Agreements [Line Items] |
Expiration Dates, by Distributor | Indefinite
Ford [Member] |
Note 3 - Supplier and Customer Concentration (Details) - Major Suppliers and Dealership Agreements [Line Items] |
Expiration Dates, by Distributor | Indefinite
Blue Bird [Member] |
Note 3 - Supplier and Customer Concentration (Details) - Major Suppliers and Dealership Agreements [Line Items] |
Expiration Dates, by Distributor | August 2016
IC Bus [Member] |
Note 3 - Supplier and Customer Concentration (Details) - Major Suppliers and Dealership Agreements [Line Items] |
Expiration Dates, by Distributor | May 2015 through December 2017

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