Note 16 - Segment Reporting - Reconciliation of Revenue by Segment (Details) - USD ($)		3 Months Ended						9 Months Ended
		Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Mar. 31, 2023	Mar. 31, 2022
Net income		$ 153,294	$ 181,794	$ 497,168	$ 870,134	$ 1,023,335	$ (1,880,993)	$ 832,256	$ 12,476
Capital expenditures		39,052			1,644			73,982	5,224
Capital expenditures		39,052			1,644			73,982	5,224
U.S.A Investment Fund Management [Member]
Capital expenditures								0	0
Capital expenditures								0	0
Corporate Headquarters Including Marygold [Member]
Capital expenditures		0			0
Capital expenditures		0			0
USA Beauty Products and Other [Member]
Capital expenditures		0			968			1,778	1,508
Capital expenditures		0			968			1,778	1,508
New Zealand Food Industry Segment [Member]
Capital expenditures	[1]	34,559			676			41,889	3,716
Capital expenditures	[1]	34,559			676			41,889	3,716
Canada Security Alarm [Member]
Capital expenditures		4,493			0			8,630	0
Capital expenditures		4,493			0			8,630	0
U.K. Financial Services [Member]
Capital expenditures		0			0			1,772	0
Capital expenditures		0			0			1,772	0
Corporate Segment [Member]
Capital expenditures		0			0			19,913	0
Capital expenditures		0			0			19,913	0
Operating Segments [Member]
Revenue from Contract with Customer, Including Assessed Tax		8,298,771			8,793,688			26,002,524	27,963,824
Net income		153,294			870,134			832,256	12,476
Operating Segments [Member] | U.S.A Investment Fund Management [Member]
Revenue from Contract with Customer, Including Assessed Tax		5,022,398			5,868,558			15,708,004	17,226,969
Net income		1,892,103			2,322,177			5,459,141	3,939,412
Operating Segments [Member] | USA Beauty Products and Other [Member]
Revenue from Contract with Customer, Including Assessed Tax		745,468			702,779			2,334,009	2,716,702
Net income		(132,603)			(146,959)			(193,705)	(155,155)
Operating Segments [Member] | New Zealand Food Industry Segment [Member]
Revenue from Contract with Customer, Including Assessed Tax		1,824,789			1,667,345			5,701,714	6,131,791
Net income		(34,477)			(72,388)			183,600	217,280
Operating Segments [Member] | Canada Security Alarm [Member]
Revenue from Contract with Customer, Including Assessed Tax		576,248			555,006			1,870,986	1,888,362
Net income		73,132			39,689			253,540	180,641
Operating Segments [Member] | U.K. Financial Services [Member]
Revenue from Contract with Customer, Including Assessed Tax		129,868			0			387,811	0
Net income		10,256			0			33,312	0
Operating Segments [Member] | Corporate Segment [Member]
Net income		$ (1,655,117)			$ (1,272,385)			$ (4,903,632)	$ (4,169,702)

[1] Includes $401,681 related to the acquisition of Printstock in July 2020. See Note 15, Business Combinations