Note 17 - Quarterly Results of Operations (Unaudited)

12 Months Ended

Dec. 31, 2011

Quarterly Financial Information [Text Block]

17.           QUARTERLY RESULTS OF OPERATIONS (UNAUDITED)

	(in thousands except per share amounts)
Quarters ended	Mar. 31, 2011			June 30, 2011		Sep. 30, 2011			Dec. 31, 2011
Freight revenue	$	124,418		$	133,630	$	126,482		$	127,496
Operating income (loss)(1)		301			7,234		(9,754	)		1,159
Net (loss) income (1)		(2,464	)		1,655		(11,213	)		(2,245	)
Basic and diluted (loss) income per share		(0.17	)		0.11		(0.76	)		(0.15	)

	(in thousands except per share amounts)
Quarters ended	Mar. 31, 2010			June 30, 2010		Sep. 30, 2010		Dec. 31, 2010
Freight revenue	$	129,336		$	141,392	$	138,964	$	136,628
Operating income		1,816			10,042		8,172		5,976
Net income (loss)		(2,176	)		2,889		1,884		690
Basic and diluted income (loss) per share (1)		(0.15	)		0.20		0.13		0.05

(1) Quarter totals do not aggregate to annualized results due to rounding.