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Note 2 - Summary of Significant Accounting Policies - Reconciliation of Cash, Cash Equivalents, and Restricted Cash (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Mar. 31, 2022
Cash $ 13,505 $ 34,174
Cash equivalents 2,193 0
Restricted cash and cash equivalents included in current assets 0 1,066
Total cash, cash equivalents, and restricted cash and cash equivalents shown in the Condensed Consolidated Statements of Cash Flows $ 15,698 $ 35,240