Note 7 - Restricted Cash (Tables)

9 Months Ended

Apr. 30, 2022

Notes Tables

Restrictions on Cash and Cash Equivalents [Table Text Block]

	April 30, 2022			July 31, 2021
Restricted cash, beginning of period	$	2,037,677		$	1,839,216
Restricted cash received from U1A Acquisition		13,754,533			-
(Release) addition of surety bond collateral		(1,754,507	)		198,377
Interest received		392			84
Restricted cash, end of period	$	14,038,095		$	2,037,677

Schedule of Cash and Cash Equivalents and Restricted Cash [Table Text Block]

	April 30, 2022		April 30, 2021
Cash and cash equivalents	$	23,754,031	$	43,930,316
Restricted cash		14,038,095		2,037,677
Total cash, cash equivalents and restricted cash	$	37,792,126	$	45,967,993