Note 5 - Accrued Expenses and Other Liabilities - Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Payroll	$ 2,226	$ 2,955
Accrued vacation	2,191	1,987
Taxes—other than income	2,719	2,319
Interest	284	249
Driver escrows	2,211	2,722
Margin account borrowings	7,474	11,281
Self-insurance claims	2,988	1,984
Legal reserves	19,901
Total accrued expenses and other liabilities	40,610	23,497
Accrued Expenses and Other Liabilities [Member]
Current lease liabilities (recorded in other current liabilities)	$ 616