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Note 2 - Assets Held For Sale - Assets and Liabilities Held For Sale (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Mar. 31, 2019
Noncurrent Liabilities Held For Sale $ 305
Disposal Group, Held-for-sale, Not Discontinued Operations [Member]    
Property, Plant and Equipment (net)   1,568
Current Assets Held For Sale 1,568
Capital Lease Obligations Current Portion   61
Current Liabilities Held For Sale 61
Capital Lease Obligations   305
Noncurrent Liabilities Held For Sale   $ 305