Additional Balance Sheet Disclosures (Details) - USD ($) $ in Thousands	Oct. 31, 2020	Jul. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ (269,510)	$ (276,248)
Inventory, Finished Goods, Net of Reserves	74,933	85,547
Inventory, Work in Process, Net of Reserves	20,815	24,044
Inventory, Raw Materials, Net of Reserves	24,472	26,071
Inventories	$ 120,220	$ 135,662

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process.

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Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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