Income Taxes - Schedule of Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Jul. 31, 2022	Jul. 31, 2021
Tax Credit Carryforward [Line Items]
Deferred Tax Assets, Gross	$ 53,570	$ 52,916
Deferred Tax Liabilities, Gross	64,993	64,778
Deferred Tax Liabilities, Other	5,226	5,282
Deferred Tax Assets, Tax Deferred Expense, Other	17,919	13,698
Deferred Tax Liability, Valuation Allowance	0	0
Deferred Tax Assets, Valuation Allowance	47,276	51,069
Deferred Tax Liabilities Tax Credit Carryforwards And Net Operating Losses	0	0
Deferred Tax Assets, Tax Credit Carryforwards	49,006	60,238
Deferred tax liabilities, deferred tax expense, postretirement benefits	0	166
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits	2,301	2,359
Deferred Tax Liability, Deferred Expense, Deferred Compensation	0	0
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	9,221	8,069
Deferred Tax Liabilities, Intangible Assets	50,095	51,987
Deferred Tax Assets, Goodwill and Intangible Assets	859	996
Deferred Tax Liabilities, Property, Plant and Equipment	9,618	7,292
Deferred Tax Assets, Property, Plant and Equipment	3,177	3,479
Deferred Tax Liabilities Accounts Receivable	0	0
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	2,105	1,433
Deferred Tax Liabilities Tax Deferred Expense Compensation And Benefits Employee Benefits	0	0
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits	8,146	8,570
Deferred Tax Liabilities, Inventory	54	51
Deferred Tax Assets, Inventory	8,112	5,143
Net of liabilities [Member]
Tax Credit Carryforward [Line Items]
Deferred Tax Assets, Valuation Allowance	47,276
Deferred Tax Assets, Tax Credit Carryforwards	49,006
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits	2,301
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	9,221
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	2,105
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits	8,146
Deferred Tax Assets, Inventory	8,058
Net of assets [Member]
Tax Credit Carryforward [Line Items]
Deferred Tax Liabilities, Net	11,423	11,862
Deferred Tax Assets, Tax Deferred Expense, Other	12,693
Deferred Tax Liabilities, Intangible Assets	49,236
Deferred Tax Liabilities, Property, Plant and Equipment	6,441
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards	$ 205
Net of liabilities [Member]
Tax Credit Carryforward [Line Items]
Deferred Tax Assets, Valuation Allowance		51,069
Deferred Tax Assets, Tax Credit Carryforwards		60,238
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits		2,193
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost		8,069
Deferred Tax Liabilities, Intangible Assets		50,991
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts		1,433
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits		8,570
Deferred Tax Assets, Inventory		5,092
Net of assets [Member]
Tax Credit Carryforward [Line Items]
Deferred Tax Assets, Tax Deferred Expense, Other		8,416
Deferred Tax Liabilities, Property, Plant and Equipment		$ 3,813