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Note 2 - Assets Held For Sale - Assets and Liabilities Held For Sale (Details) - Disposal Group, Held-for-sale, Not Discontinued Operations [Member] - USD ($)
$ in Thousands
Mar. 31, 2021
Mar. 31, 2020
Property, Plant and Equipment (net) $ 8,656  
Current Assets Held For Sale $ 8,656 $ 0