Revenue Recognition (Tables)

9 Months Ended

Jun. 30, 2022

Revenue from Contract with Customer [Abstract]

Summary of Revenues Classified by Major Geographic Region

Revenues, classified by the major geographic region in which our customers are located, for the three and nine months ended June 30, 2022 and 2021 (dollars in thousands):

	Three Months Ended June 30,				Nine Months Ended June 30,
	2022		2021		2022		2021
Revenues:
United States	$	23,317	$	31,632	$	80,401	$	100,507
Other Americas		20		37		57		105
Germany		18,880		24,519		61,520		81,230
Other Europe, Middle East and Africa		4,561		10,574		11,091		27,239
Japan		17,476		19,032		68,965		45,484
Other Asia-Pacific		24,787		11,007		47,713		34,541
Total net revenues	$	89,041	$	96,801	$	269,747	$	289,106

Summary of Significant Changes in Contract Assets and Deferred Revenue

The table below shows significant changes in contract assets (dollars in thousands):

	Contract assets
Balance as of September 30, 2021	$	59,143
Revenues recognized but not billed		81,375
Amounts reclassified to accounts receivable, net		(49,514	)
Foreign exchange impact on ending balance		(10,544	)
Balance as of June 30, 2022	$	80,460

The table below shows significant changes in deferred revenue (dollars in thousands):

	Deferred revenue
Balance as of September 30, 2021	$	276,737
Amounts billed but not recognized		76,526
Revenue recognized		(101,104	)
Foreign exchange impact on ending balance		(3,474	)
Balance as of June 30, 2022	$	248,685

Summary of Estimated Revenue Expected to be Recognized in Future Related to Performance Obligations Unsatisfied or Partially Unsatisfied

The following table includes estimated revenue expected to be recognized in the future related to performance obligations that are unsatisfied or partially unsatisfied at June 30, 2022 (dollars in thousands):

	Within One Year		Two to Five Years		Greater than Five Years		Total
Total revenue	$	155,697	$	158,849	$	27,041	$	341,587