Note 5 - Segment Reporting (Detail) - Operating Income (Loss) by Reporting Segments (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Operating (loss) income
Operating Income (Loss) by Segments	$ (8,525)	$ (5,859)	$ (19,490)	$ (6,829)
Trucking [Member]
Operating (loss) income
Operating Income (Loss) by Segments	(10,111)	(7,572)	(24,391)	(11,652)
SCS [Member]
Operating (loss) income
Operating Income (Loss) by Segments	1,916	1,873	5,989	5,481
Intermodal [Member]
Operating (loss) income
Operating Income (Loss) by Segments	$ (330)	$ (160)	$ (1,088)	$ (658)