Description of Business and Summary of Significant Accounting Policies (Details Textual)	3 Months Ended
	Oct. 31, 2020 USD ($) Segment	Jul. 31, 2020 USD ($)
Description Of Business and Summary Of Significant Accounting Policies [Line Items]
Contract with Customer, Asset, after Allowance for Credit Loss	$ 10,080,000
Capitalized Contract Cost, Gross	100,000
Capitalized Contract Cost, Amortization	(813,000)
Indefinite-lived Intangible Assets, Foreign Currency Translation Gain (Loss)	(180,000)
Contract with Customer, Asset, after Allowance for Credit Loss	9,187,000
Contract with Customer, Liability	0	$ 0
Capitalized software costs	56,300,000	52,600,000
Accumulated amortization expense	$ 36,300,000	$ 33,500,000
Number of operating segments | Segment	2
Number of reportable segment | Segment	2