Summary of Significant Accounting Policies Property, plant and equipment (Tables)

12 Months Ended

Jul. 31, 2019

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

Property, plant and equipment consist of the following as of July 31:

	2019			2018
Land	$	9,752		$	6,994
Buildings and improvements	99,685			96,245
Machinery and equipment	266,991			270,989
Construction in progress	7,500			4,495
Property, plant and equipment—gross	383,928			378,723
Accumulated depreciation	(273,880		)	(280,778		)
Property, plant and equipment—net	$	110,048		$	97,945