Income Taxes (Details) - USD ($)	Oct. 31, 2021	Jul. 31, 2021
Income Tax Contingency [Line Items]
Unrecognized tax benefits, including interest	$ 9,393,000	$ 9,172,000
Interest accrued relating to income taxes	193,000	163,000
Unrecognized tax benefits that would positively impact our effective tax rate, if recognized	8,589,000	8,408,000
Non-current income taxes payable
Income Tax Contingency [Line Items]
Unrecognized tax benefits, including interest	3,105,000	2,717,000
Non-current deferred tax assets
Income Tax Contingency [Line Items]
Unrecognized tax benefits, including interest	$ 6,288,000	$ 6,455,000