Note 6 - Debt - Current and Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Borrowings under Credit Facility	$ 3,911	$ 9,007
Long-term debt, current	28,710	24,596
Long-term debt, noncurrent	166,635	164,465
Deferred loan costs	(147)	(140)
Deferred loan costs	(154)	(298)
Principal portion of capital lease obligations, secured by related revenue equipment, current	5,374	2,962
Long-term portion of capital lease obligations	35,119	21,777
Total debt and capital lease obligations, current	34,084	27,558
Total debt and capital lease obligations, noncurrent	201,754	186,242
Revenue Equipment Installment Notes [Member]
Long-term debt, current	27,809	23,732
Long-term debt, noncurrent	139,115	130,946
Real Estate Note [Member]
Long-term debt, current	1,048	1,004
Long-term debt, noncurrent	$ 23,763	$ 24,810

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

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