Note 6 - Bitcoin (Details Textual)	1 Months Ended	3 Months Ended		6 Months Ended
	Jan. 31, 2026 USD ($)	Jan. 31, 2026 USD ($)	Jan. 31, 2025 USD ($)	Jan. 31, 2026 USD ($)	Jan. 31, 2025 USD ($)
Bitcoin Purchased	0.50096	0.50096		0.50096
Crypto Asset, Cost	$ 42,560	$ 42,560		$ 42,560
Bitcoin, Purchase Fees	421
Crypto Asset, Fair Value	$ 38,982	$ 38,982		$ 38,982
Bitcoin, Carrying Value, Number of Units	0.50096	0.50096		0.50096
Crypto Asset, Unrealized Loss, Nonoperating		$ 3,157	$ (0)	$ 3,157	$ (0)