Note 7 - Debt (Detail) - Current and Long-term Debt (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Borrowings under Credit Facility	$ 2,599	$ 15,890
Total debt	66,339	96,258
Total debt	89,144	128,167
Capital lease obligations, secured by related revenue equipment	2,055	1,957
Capital lease obligations, secured by related revenue equipment	14,539	16,129
Total debt and capital lease obligations	68,394	98,215
Total debt and capital lease obligations	103,683	144,296
Revenue Equipment Installment Notes [Member]
Secured notes payable - current	63,267	80,003
Secured notes payable - long-term	86,793	125,666
Real Estate Note [Member]
Secured notes payable - current	365	365
Secured notes payable - long-term	2,038	2,258
Other Note Payable [Member]
Other note payable, interest rate of 3.0% at September 30, 2012, and December 31, 2011, with fixed maturity at November 2016	108
Other note payable, interest rate of 3.0% at September 30, 2012, and December 31, 2011, with fixed maturity at November 2016	$ 313	$ 243