Deferred Revenue (Tables)

12 Months Ended

Sep. 30, 2020

Deferred Revenue [Abstract]

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 October 1, 2018	$	6,470
Revenues recognized but not billed		42,661
Amounts reclassified to accounts receivable, net		(39,912	)
Balance as of September 30, 2019	$	9,219
Revenues recognized but not billed		52,682
Amounts reclassified to accounts receivable, net		(31,624	)
Balance as of September 30, 2020	$	30,277

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

	Deferred revenue
Balance as of October 1, 2018	$	335,252
Amounts billed but not recognized		117,201
Revenue recognized		(99,169	)
Balance as of September 30, 2019	$	353,284
Amounts billed but not recognized		96,126
Revenue recognized		(124,317	)
Balance as of September 30, 2020	$	325,093

Deferred revenue consisted of the following (dollars in thousands):

	September 30,
	2020		2019
Current Liabilities:
Unearned revenue	$	112,520	$	88,233
Total	$	112,520	$	88,233
Non-current Liabilities:
Unearned revenue		212,573		265,051
Total	$	212,573	$	265,051