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Note 16 - Commitments and Contingencies (Details Textual) - USD ($)
$ in Thousands
Mar. 31, 2021
Mar. 31, 2020
Restricted Cash and Cash Equivalents, Noncurrent, Total $ 5,568 $ 5,657
Restricted Cash and Cash Equivalents, Current, Total 2,200  
Letter of Credit [Member]    
Escrow Deposit $ 5,000