Goodwill and Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2022

Goodwill And Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill for the fiscal years ended September 30, 2022 and 2021 were as follows (dollars in thousands):

	Total
Balance as of October 1, 2020	$	1,128,198
Effect of foreign currency translation		313
Balance as of September 30, 2021		1,128,511
Goodwill impairment		(213,720	)
Effect of foreign currency translation		(23,989	)
Balance as of September 30, 2022	$	890,802

Summary of Gross Carrying Amounts and Accumulated Amortization of Intangible Assets by Major Class

The following tables summarizes the gross carrying amounts and accumulated amortization of intangible assets by major class (dollars in thousands):

	September 30, 2022
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Remaining Life (Years)
Customer relationships	$	104,498	$	(95,315	)	$	9,183		1.7
Technology and patents		88,600		(88,083	)		517		1.2
Total	$	193,098	$	(183,398	)	$	9,700

	September 30, 2021
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Remaining Life (Years)
Customer relationships	$	110,485	$	(88,638	)	$	21,847		2.2
Technology and patents		90,738		(87,237	)		3,501		0.9
Total	$	201,223	$	(175,875	)	$	25,348

Schedule of Estimated Amortization

Estimated amortization for each of the five succeeding years and thereafter as of September 30, 2022, is as follows (dollars in thousands):

Year Ending September 30,	Cost of Revenues		Operating Expenses		Total
2023	$	414	$	5,774	$	6,188
2024		103		2,085		2,188
2025		—		1,324		1,324
Total	$	517	$	9,183	$	9,700