Note 7 - Debt - Current and Long-term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt, current	$ 4,607	$ 5,722
Debt, noncurrent	43,167	20,347
Principal portion of finance lease obligations, secured by related revenue equipment, current	7,574	6,848
Principal portion of finance lease obligations, secured by related revenue equipment, noncurrent	2,408	3,969
Principal portion of operating lease obligations, secured by related revenue equipment	13,149	15,811
Principal portion of operating lease obligations, secured by related revenue equipment	19,438	21,554
Total debt and lease obligations	25,330	28,381
Total debt and lease obligations	65,013	45,870
Finance Lease Secured by Related Revenue Equipment [Member]
Principal portion of finance lease obligations, secured by related revenue equipment, current	7,574	6,848
Principal portion of finance lease obligations, secured by related revenue equipment, noncurrent	2,408	3,969
Operating Lease Secured By Related Equipment [Member]
Principal portion of operating lease obligations, secured by related revenue equipment	13,149	15,811
Principal portion of operating lease obligations, secured by related revenue equipment	19,438	21,554
Draw Note [Member]
Credit facility, current	0	0
Credit facility, noncurrent	0	0
Revenue Equipment Installment Notes [Member]
Debt, current	3,405	4,537
Debt, noncurrent	0	2
Real Estate Note [Member]
Debt, current	1,202	1,185
Debt, noncurrent	20,035	20,345
Revolving Credit Facility [Member]
Credit facility, current	0	0
Credit facility, noncurrent	$ 23,132	$ 0

Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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