Note 14 - Leases (Details Textual) - USD ($)	Mar. 31, 2026	Mar. 31, 2025
Operating Lease, Liability, Current	$ 162,000	$ 136,000
Finance Lease, Liability, Current	1,400	1,000
Operating Lease, Liability, Noncurrent	158,000	321,000
Finance Lease, Liability, Noncurrent	3,700	5,000
Operating Lease, Right-of-Use Asset	300,000	443,000
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	4,300	$ 6,000
UNITED STATES | Office Space [Member]
Operating Lease, Liability, Current	52,000
Operating Lease, Liability, Noncurrent	109,000
Operating Lease, Right-of-Use Asset	141,000
Vigers Appraisal And Consulting Ltd [Member]
Operating Lease, Liability, Current	110,000
Operating Lease, Liability, Noncurrent	49,000
Operating Lease, Right-of-Use Asset	$ 159,000
Minimum [Member]
Lessee, Operating Lease, Term of Contract (Year)	17 years
Maximum [Member]
Lessee, Operating Lease, Term of Contract (Year)	39 years