Note 7 - Debt - Current and Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Borrowings under Credit Facility
Borrowings under Credit Facility	9,007	12,185
Long-term debt, current	24,596	24,947
Long-term debt, noncurrent	164,465	168,676
Deferred loan costs	(140)	(263)
Deferred loan costs	(298)	(256)
Principal portion of capital lease obligations, secured by related revenue equipment, current	2,962	2,441
Principal portion of capital lease obligations, secured by related revenue equipment, noncurrent	21,777	19,761
Total debt and capital lease obligations, current	27,558	27,388
Total debt and capital lease obligations, noncurrent	186,242	188,437
Revenue Equipment Installment Notes [Member]
Long-term debt, current	23,732	23,986
Long-term debt, noncurrent	130,946	127,840
Real Estate Note [Member]
Long-term debt, current	1,004	1,224
Long-term debt, noncurrent	$ 24,810	$ 28,907

Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

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