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Employees' Retirement Plan (Details) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Dec. 31, 2021
Jan. 31, 2022
Jan. 31, 2021
Jan. 31, 2022
Jan. 31, 2021
Retirement Benefits [Abstract]          
Pension contributions   $ 112,500 $ 109,915 $ 225,031 $ 219,983
Employer contributions   $ 21,086 $ 16,875 $ 37,499 $ 30,573
Minimum contribution rate 19.66%     9.00%