Note 15 - Segment Reporting - Reconciliation of Revenue by Segment (Details) - USD ($)	6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net income	$ 1,773,401	$ 261,849	$ 1,773,401	$ 261,849
Capital expenditures			559,274	50,165
Purchase of property, plant and equipment-net of disposals			(559,274)	(50,165)
USA Beauty Products and Other [Member]
Capital expenditures			6,242	5,501
Purchase of property, plant and equipment-net of disposals			(6,242)	(5,501)
Corporate Segment [Member]
Capital expenditures			2,786
Purchase of property, plant and equipment-net of disposals			(2,786)
U.S.A Investment Fund Management [Member]
Capital expenditures
Purchase of property, plant and equipment-net of disposals
New Zealand Food Industry Segment [Member]
Capital expenditures			133,975	48,856
Purchase of property, plant and equipment-net of disposals			(133,975)	(48,856)
Canada Security Alarm [Member]
Capital expenditures			416,271	4,192
Purchase of property, plant and equipment-net of disposals			(416,271)	(4,192)
Operating Segments [Member]
Revenue from Contract with Customer, Including Assessed Tax			26,748,988	26,948,623
Net income			1,773,401	261,849
Operating Segments [Member] | USA Beauty Products and Other [Member]
Revenue from Contract with Customer, Including Assessed Tax			3,883,953	3,621,246
Net income			215,620	406,963
Operating Segments [Member] | Corporate Segment [Member]
Net income			(1,913,413)	(1,223,930)
Operating Segments [Member] | U.S.A Investment Fund Management [Member]
Revenue from Contract with Customer, Including Assessed Tax			15,459,061	15,021,439
Net income			2,850,451	687,755
Operating Segments [Member] | New Zealand Food Industry Segment [Member]
Revenue from Contract with Customer, Including Assessed Tax			4,745,821	4,747,358
Net income			326,448	(13,326)
Operating Segments [Member] | Canada Security Alarm [Member]
Revenue from Contract with Customer, Including Assessed Tax			2,660,153	3,558,580
Net income			$ 294,295	$ 404,387