Note 16 - Change in Depreciable Lives of Property and Equipment (Details Textual) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | 6 Months Ended | |
|---|---|---|---|
Dec. 31, 2015 |
Sep. 30, 2015 |
Dec. 31, 2015 |
|
| Tractors [Member] | |||
| Property, Plant and Equipment, Useful Life | 4 years | 3 years | |
| Trailers [Member] | |||
| Property, Plant and Equipment, Useful Life | 10 years | 7 years | |
| Depreciation Expense [Member] | |||
| New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Operating Results | $ 2.9 | ||
| New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Revenue | $ 1.7 | ||
| New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Basic and Diluted Earnings Per Share | $ 0.06 | ||