Note 6 - Customer and Vendor Concentrations (Details Textual)	3 Months Ended
	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2025 USD ($)
Accounts Receivable, after Allowance for Credit Loss, Current	$ 1,839,000		$ 1,464,000
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member]
Number of Major Customers	1
Purchases [Member] | Supplier Concentration Risk [Member]
Number of Major Vendors	3	1
Purchases [Member] | Supplier Concentration Risk [Member] | Vendor Two [Member]
Concentration Risk, Percentage	17.00%
Purchases [Member] | Supplier Concentration Risk [Member] | One Vendor [Member]
Concentration Risk, Percentage		26.00%
Purchases [Member] | Supplier Concentration Risk [Member] | Vendor One [Member]
Concentration Risk, Percentage	22.00%
Customer One [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member]
Concentration Risk, Percentage	12.00%	17.00%
Customer One [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]
Number of Major Vendors	1	1
Accounts Receivable, after Allowance for Credit Loss, Current	$ 348,000	$ 135,000
Customer Two [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member]
Concentration Risk, Percentage		13.00%
Customer Three [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member]
Concentration Risk, Percentage		11.00%