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Note 4 - Accrued Expenses and Other Liabilities - Accrued Expenses and Other Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Payroll $ 2,710 $ 2,427
Accrued vacation 1,762 1,862
Taxes—other than income 2,488 2,062
Interest 99 102
Driver escrows 2,381 2,245
Margin account borrowings 5,903 10,358
Self-insurance claims 2,266 3,274
Total accrued expenses and other liabilities $ 17,609 $ 22,330