Note 6 - Other Accrued Expenses (Details Textual) - USD ($)	Dec. 31, 2024	Jun. 30, 2024
Accounts and Other Receivables, Net, Current	$ 1,035,000	$ 1,047,000
HIVE Blockchain Technologies Ltd. [Member]
Accounts and Other Receivables, Net, Current	$ 149,000	$ 207,000

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.

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