Note 5 - Mineral Rights and Properties - Identifiable Assets Acquired and Liabilities Assumed (Details) - USD ($)		12 Months Ended
	Aug. 09, 2017	Jul. 31, 2019	Jul. 31, 2017
14,634,748 UEC common shares at $1.37 per share			$ 87,617
Transaction costs	$ 779,509
Reno Creak Acquistion [Member]
14,634,748 UEC common shares at $1.37 per share		$ 20,049,605
11,308,728 UEC share purchase warrants at $0.45 per warrant		5,088,928
Cash payment		909,930
Transaction costs		779,509
		26,827,972
Cash and cash equivalents		1,247,170
Prepaid expenses		319,874
Restricted cash		73,973
Land and buildings		370,085
Mineral rights and properties		25,553,807
Asset retirement obligations		(73,973)
Deferred tax liabilities		(662,964)
		$ 26,827,972