Note 4 - Revenue and Segment Information - Contract Balances (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Accounts receivable (including related-party), beginning of period	$ 4,300	$ 1,148
Accounts receivable (including related-party), end of period	11,826
Unearned revenue, beginning of period	3,243	$ 3,888
Unearned revenue, end of period	$ 2,805

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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-Topic 954
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Name:	us-gaap_AccountsReceivableNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant