Note 7 - Other Accrued Expenses (Details Textual) - USD ($)	Mar. 31, 2024	Jun. 30, 2023
Accounts and Other Receivables, Net, Current	$ 1,027,000	$ 1,245,000
HIVE Blockchain Technologies Ltd. [Member]
Accounts and Other Receivables, Net, Current	$ 127,000	$ 43,000

Amount, after allowance, receivable from customers, clients, or other third-parties, and receivables classified as other due within one year or the normal operating cycle, if longer.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant