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Note 3 - Details of Consolidated Balance Sheet Accounts - Accrued Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Accrued expenses $ 6,738 $ 7,091
Vacation 6,558 5,895
Salaries and wages 5,438 9,744
Accrued liability to MWL 0 1,222
Other 2,946 4,214
$ 21,680 $ 28,166