Impairment - Wood Treatment (Tables)

12 Months Ended

Sep. 30, 2021

Long-Lived Asset Impairment [Abstract]

Long-lived Asset Impairment

The impairment charges for wood treatment, included in the Performance Materials segment and presented within Impairment charges in the Consolidated Statements of (Loss) Income, are as follows:

	Year Ended September 30,
	2021		2020		2019
Long-lived asset impairment charges:
Property, plant, and equipment, net	$	91	$	450	$	4,063
Other intangible assets, net	3,175		1,864		63,309
Total wood treatment long-lived asset impairment charges	3,266		2,314		67,372
Goodwill	25,576		—		—
Total wood treatment impairment charges	$	28,842	$	2,314	$	67,372