Revenues from Contracts with Customers (Tables)

12 Months Ended

Sep. 30, 2022

Revenues from Contracts with Customers

Schedule of disaggregation of revenue

	Year Ended
	September 30,
	2020		2021		2022
Net revenues (dollars in thousands)
Aerospace	$	191,980	$	128,072	$	230,001
Chemical processing		63,170		63,147		91,665
Industrial gas turbine		56,576		66,772		91,878
Other markets		45,099		58,090		53,706
Total product revenue		356,825		316,081		467,250
Other revenue		23,705		21,580		23,211
Net revenues	$	380,530	$	337,661	$	490,461