Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands		12 Months Ended
		Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2018
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits, Income Tax Penalties Expense		$ 96	$ 2,357	$ 83
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Tax at statutory rate		21.00%	21.00%	26.90%
State income taxes, net of federal tax benefit	[1]	1.00%	0.30%	1.60%
International rate differential(1)		5.10%	2.20%	(1.10%)
Rate variances arising from foreign subsidiary distributions		0.20%	(0.40%)	0.80%
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent		(1.40%)	1.80%	14.10%
Effective Income Tax Rate Reconciliation, Disposition of Business, Percent		0.00%	0.00%	(0.80%)
Effective Income Tax Rate Reconciliation, Tax Contingency, Percent	[2]	(2.00%)	(3.60%)	2.20%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent		0.50%	2.30%	0.50%
Research and development tax credits and domestic manufacturer’s deduction		(2.00%)	(1.60%)	(2.00%)
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent		(2.30%)	(1.70%)	(2.10%)
Income tax rate		20.10%	20.30%	40.10%

[1] T

[2] he year ended July 31, 2018, includes the divestiture of the Company's Runelandhs business based in Sweden. Refer to Note 15, "Divestiture" for additional information.