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Note 11 - Accrued Liabilities - Summary of Accrued Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Salaries, wages, employment taxes and withholdings $ 2,416 $ 2,019
Employee benefit plans 1,517 1,050
Accrued professional fees 966 821
Income, property and other taxes 355 453
Contract liabilities 5,769 8,369
Deferred gain from sale-leaseback 313 500
Other 1,159 1,753
Total $ 12,495 $ 14,965