Note 11 - Other Loans Payable - Other Loans Payable (Details) - USD ($)	Apr. 30, 2021	Jul. 31, 2020
Current portion	$ 9,821,573
Other Loans Payable, Noncurrent		19,869,477
Other Loans Payable [Member]
Other Loans Payable	303,880	307,092
Current portion	189,143
Other Loans Payable, Noncurrent	114,737	307,092
Other Loans Payable [Member] | Government Loan Payable [Member]
Other Loans Payable		307,092
Current portion
Other Loans Payable, Noncurrent		307,092
Other Loans Payable [Member] | Promissory Note [Member]
Other Loans Payable	303,880
Current portion	189,143
Other Loans Payable, Noncurrent	$ 114,737