Note 9 - Leases (Details Textual) - USD ($)	Jun. 30, 2026	Mar. 31, 2026
Operating Lease, Liability, Current	$ 167,000	$ 162,000
Finance Lease, Liability, Current	1,000	1,000
Operating Lease, Liability, Noncurrent	115,000	158,000
Finance Lease, Liability, Noncurrent	3,000	4,000
Operating Lease, Right-of-Use Asset	263,000	300,000
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	4,000	$ 4,000
Vigers Appraisal And Consulting Ltd [Member]
Operating Lease, Liability, Current	113,000
Operating Lease, Liability, Noncurrent	20,000
Operating Lease, Right-of-Use Asset	$ 133,000
Minimum [Member]
Lessee, Operating Lease, Remaining Lease Term (Month)	14 months
Maximum [Member]
Lessee, Operating Lease, Remaining Lease Term (Month)	36 months