Property, Plant & Equipment

12 Months Ended

Oct. 31, 2020

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment Disclosure

Property, plant and equipment consisted of the following at October 31, 2020 and 2019 (in thousands):

	October 31,
	2020		2019
Land and land improvements	$	10,298	$	10,298
Buildings and building improvements	100,576		101,569
Machinery and equipment	398,950		386,953
Construction in progress	14,424		12,348
Property, plant and equipment, gross	524,248		511,168
Less: Accumulated depreciation	340,144		317,568
Property, plant and equipment, net	$	184,104	$	193,600

Depreciation expense for the years ended October 31, 2020, 2019, and 2018 was $31.8 million, $34.3 million and $35.6 million, respectively.

If there are indicators of potential impairment, we evaluate our property, plant and equipment for recoverability over the remaining useful lives of the assets. We did not incur impairment losses associated with these assets for the years ended October 31, 2020, 2019, and 2018. See further discussion at Note 1, "Nature of Operations, Basis of Presentation and Significant Accounting Policies - Long-Lived Assets - Property, Plant and Equipment and Intangible Assets with Defined Lives."