Segment Reporting (Tables)

12 Months Ended

Sep. 30, 2021

Revenue from external customers by segment are as follows:


	Year Ended September 30,
	2021		2020		2019
Segment Revenue:
Electronic Materials:
CMP slurries	$	546,959	$	480,617	$	460,053
Electronic chemicals	330,761		316,253		278,413
CMP pads	95,335		85,954		94,585
Materials technologies	11,657		—		—
Total Electronic Materials	$	984,712	$	882,824	$	833,051

Performance Materials:
PIM	$	106,810	$	141,503	$	140,553
Wood treatment	73,188		62,655		31,898
QED	35,121		29,288		32,194
Total Performance Materials	$	215,119	$	233,446	$	204,645

Total	$	1,199,831	$	1,116,270	$	1,037,696

Capital expenditures by segment are as follows:

Adjusted EBITDA by segment is as follows:


	Year Ended September 30,
	2021		2020		2019
Net (loss) income	$	(68,577)	$	142,828	$	39,215
Interest expense, net	38,360		41,840		43,335
Income taxes	13,783		30,519		23,891
Depreciation and amortization	132,170		127,737		98,592
EBITDA	115,736		342,924		205,033
Impairment charges	230,392		2,314		67,372
Acquisition and integration-related expense	10,115		10,852		34,709
Environmental accrual	2,508		—		—
Costs related to KMG-Bernuth warehouse fire, net of insurance recovery	(1,050)		1,083		9,905
Costs related to the Pandemic, net of grants received	489		849		—
Charge for fair value write-up of acquired inventory sold	—		—		14,869
Net costs related to restructuring of the wood treatment business	123		(221)		1,530
Consolidated adjusted EBITDA	$	358,313	$	357,801	$	333,418

Segment adjusted EBITDA:
Electronic Materials	$	323,827	$	299,037	$	294,902
Performance Materials	87,961		106,797		91,372
Unallocated corporate expenses	(53,475)		(48,033)		(52,856)
Consolidated adjusted EBITDA	$	358,313	$	357,801	$	333,418