Note 16 - Segment Reporting - Reconciliation of Assets by Segment (Details) - USD ($)		Mar. 31, 2022	Jun. 30, 2021
Identifiable assets		$ 34,070,086	$ 31,507,680	[1]
Property, plant, and equipment		3,559,842	3,420,886
Plant and equipment, gross		3,559,842	3,420,886
Less accumulated depreciation	[2]	(2,000,690)	(1,847,441)
Total property and equipment, net		1,559,152	1,573,445	[1]
U.S.A Investment Fund Management [Member]
Identifiable assets		17,660,600	17,467,044
Property, plant, and equipment		0	0
Plant and equipment, gross		0	0
USA Beauty Products and Other [Member]
Identifiable assets		3,772,178	4,024,803
Property, plant, and equipment		60,469	58,961
Plant and equipment, gross		60,469	58,961
New Zealand Food Industry Segment [Member]
Identifiable assets		4,475,419	3,831,539
Property, plant, and equipment	[3]	2,491,427	2,345,569
Plant and equipment, gross	[3]	2,491,427	2,345,569
Canada Security Alarm [Member]
Identifiable assets		2,588,908	2,671,286
Property, plant, and equipment		990,202	998,612
Plant and equipment, gross		990,202	998,612
Corporate Segment [Member]
Identifiable assets		5,572,981	3,513,008
Property, plant, and equipment		17,744	17,744
Plant and equipment, gross		$ 17,744	$ 17,744

[1] Derived from audited financial statements

[2] Included with accumulated depreciation is the amortization of the underlying assets of the solar energy finance lease at Gourmet Foods, which totaled $4,214 as of March 31, 2022.

[3] Includes the underlying assets of the solar energy system finance lease totaling $150,625 at Gourmet Foods.