Income Taxes (Income Before Provision for Income Taxes) (Details) - USD ($)	12 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2018
Income Tax Disclosure [Abstract]
U.S.	$ 7,226,000	$ 28,813,000	$ 22,243,000
Foreign	2,084,000	97,000	2,383,000
Income before provision for (benefit from) income taxes	$ 9,310,000	$ 28,910,000	$ 24,626,000