Segment Reporting (Tables)

6 Months Ended

Mar. 31, 2022

Segment Reporting [Abstract]

Schedule of Segment Revenue

Revenue from external customers by segment are as follows:

	Three Months Ended March 31,				Six Months Ended March 31,
	2022		2021		2022		2021
Electronic Materials:
CMP slurries	$	146,540	$	140,194	$	292,681	$	274,915
Electronic chemicals	95,111		80,098		186,250		160,104
CMP pads	26,815		22,255		50,854		44,326
Materials technologies	6,045		—		12,377		—
Total Electronic Materials	274,511		242,547		542,162		479,345
Performance Materials:
PIM	30,394		25,987		57,029		51,894
Wood treatment	10,907		15,546		25,865		32,869
QED	8,315		6,448		16,117		14,283
Total Performance Materials	49,616		47,981		99,011		99,046
Total	$	324,127	$	290,528	$	641,173	$	578,391

Schedule of Capital Expenditures by Segment

Capital expenditures by segment are as follows:

	Three Months Ended March 31,				Six Months Ended March 31,
	2022		2021		2022		2021
Electronic Materials	$	6,229	$	6,258	$	13,365	$	11,692
Performance Materials	419		957		2,029		2,267
Corporate	3,289		2,500		5,083		5,975
Total	$	9,938	$	9,715	$	20,478	$	19,934

Schedule of Segment Adjusted EBITDA

Adjusted EBITDA by segment is as follows:

	Three Months Ended March 31,				Six Months Ended March 31,
	2022		2021		2022		2021
Net income (loss)	$	34,571	$	(149,808)	$	61,999	$	(118,278)
Interest expense, net	9,537		9,495		19,280		19,080
Provision for (benefit from) income taxes	10,979		(16,109)		14,196		(8,563)
Depreciation and amortization	32,762		32,289		65,464		64,180
EBITDA	87,849		(124,133)		160,939		(43,581)
Entegris Transaction-related expenses	12,243		—		18,293		—
Impairment charges	—		208,221		9,435		215,568
Future Forward-related expenses	45		—		3,024		—
Net costs related to restructuring of the wood treatment business	219		46		245		72
Costs related to the Pandemic, net of grants received	—		(421)		—		841
Acquisition and integration-related expenses	(540)		2,167		(233)		4,536
Costs related to KMG-Bernuth warehouse fire, net of recoveries	(3,500)		(1,076)		(3,500)		(1,076)
Consolidated adjusted EBITDA	$	96,316	$	84,804	$	188,203	$	176,360
Segment adjusted EBITDA:
Electronic Materials	$	93,957	$	81,315	$	182,039	$	162,071
Performance Materials	13,901		18,750		28,902		41,725
Unallocated corporate expenses	(11,542)		(15,261)		(22,738)		(27,436)
Consolidated adjusted EBITDA	$	96,316	$	84,804	$	188,203	$	176,360