Note 4 - Prepaid Expenses and Other Current Assets (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Other Current Assets [Table Text Block]

	(in thousands)
	December 31,
	2012			2011
Prepaid tires		$	9,174		$	8,999
Prepaid licenses, permits and tolls			1,951			2,114
Prepaid insurance			1,649			1,409
Other			2,641			944
Total prepaid expenses and other current assets		$	15,415		$	13,466