Note 16 - Change in Depreciable Lives of Property and Equipment (Details Textual) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | 6 Months Ended | 9 Months Ended | |
|---|---|---|---|---|
Mar. 31, 2016 |
Sep. 30, 2015 |
Mar. 31, 2016 |
Mar. 31, 2016 |
|
| Tractors [Member] | ||||
| Property, Plant and Equipment, Useful Life | 3 years | 4 years | ||
| Trailers [Member] | ||||
| Property, Plant and Equipment, Useful Life | 7 years | 10 years | ||
| Depreciation Expense [Member] | ||||
| New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Operating Results | $ (2.4) | $ (5.2) | ||
| New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income | $ 1.6 | $ 3.3 | ||
| New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Basic and Diluted Earnings Per Share | $ 0.06 | $ 0.12 | ||