Income Taxes (Details) - USD ($)	Sep. 30, 2022	Sep. 30, 2021
Timberline
Deferred Tax Assets, Gross	$ 14,639,000	$ 14,219,000
Deferred Tax Assets, Gross	(14,639,000)	(14,219,000)
Valuation allowance	(14,639,000)	(14,219,000)
Net deferred tax asset	0	0
Timberline | Exploration Costs Member[Member]
Deferred Tax Assets, Gross	127,000	130,000
Deferred Tax Assets, Gross	(127,000)	(130,000)
Timberline | Investments in subsidiaries [Member]
Deferred Tax Assets, Gross	184,000	184,000
Deferred Tax Assets, Gross	(184,000)	(184,000)
Timberline | Share-based compensation [Member]
Deferred Tax Assets, Gross	362,000	350,000
Deferred Tax Assets, Gross	(362,000)	(350,000)
Timberline | Foreign net operating loss carryforwards [Member]
Deferred Tax Assets, Gross	1,803,000	1,803,000
Deferred Tax Assets, Gross	(1,803,000)	(1,803,000)
BH Minerals
Deferred Tax Assets, Gross	3,348,000	2,460,000
Deferred Tax Assets, Gross	(3,348,000)	(2,460,000)
Valuation allowance	(3,348,000)	(2,460,000)
Net deferred tax asset	0	0
BH Minerals | Property, mineral rights, and equipment [Member]
Deferred Tax Assets, Gross	2,260,000	2,261,000
Deferred Tax Assets, Gross	(2,260,000)	(2,261,000)
BH Minerals | Exploration costs1 [Member]
Deferred Tax Assets, Gross	255,000	296,000
Deferred Tax Assets, Gross	$ (255,000)	$ (296,000)