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Note 8 - Accrued Liabilities (Details Textual) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Contract with Customer, Liability, Current [1] $ 397 $ 8,456
Asset, Held-for-Sale, Not Part of Disposal Group, Current $ 0 2,049
Customer Deposit [Member]    
Contract with Customer, Liability, Current   $ 4,600
[1] Includes a $4.6 million customer deposit to be credited back to the customer at conclusion of the contract and $2.0 million for assets held for sale.