Summary of Significant Accounting Policies Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2021
Property, Plant and Equipment [Line Items]
Land	$ 12,273	$ 11,916
Buildings and improvements	130,004	123,619
Machinery and equipment	282,870	268,527
Construction in progress	9,682	7,825
Property, plant and equipment—gross	434,829	411,887
Accumulated depreciation	(292,680)	(272,376)
Property, plant and equipment—net	142,149	139,511
Depreciation	$ 20,631	$ 19,216	$ 18,406
Building and Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Building and Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	33 years
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years