Note 9 - Leases (Details Textual) - USD ($)	Dec. 31, 2023	Mar. 31, 2023	Jan. 31, 2023
Operating Lease, Liability, Current	$ 128,000	$ 139,000
Finance Lease, Liability, Current	1,000	1,000
Operating Lease, Liability, Noncurrent	208,000	62,000
Finance Lease, Liability, Noncurrent	0
Operating Lease, Right-of-Use Asset	327,000	200,000
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	1,000	$ 1,000
Corporate Headquarters [Member]
Operating Lease, Right-of-Use Asset			$ 248,000
Vigers Appraisal And Consulting Ltd [Member]
Operating Lease, Liability, Current	98,000
Operating Lease, Liability, Noncurrent	0
Operating Lease, Right-of-Use Asset	$ 97,000
Minimum [Member]
Lessee, Operating Lease, Term of Contract (Year)	6 years
Maximum [Member]
Lessee, Operating Lease, Term of Contract (Year)	60 years