Contract Balances and Performance Obligations - Revenue from Contract with Customer (Tables)

6 Months Ended

Mar. 31, 2021

Revenue from Contract with Customer [Abstract]

Contract with Customer, Asset and Liability

Receivables at March 31, 2021 and September 30, 2020 consisted of the following: 

	March 31, 2021		September 30, 2020
	(In thousands)
Billed	$	155,838	$	211,776
Unbilled	159,891		181,550
	315,729		393,326
Less: allowance for doubtful accounts	(4,931)		(5,072)
Net receivables	310,798		388,254
Less: long-term receivables *	(45,994)		(54,074)
Short-term receivables *	$	264,804	334,180

* Short-term receivables and long-term receivables were recorded in accounts receivable, net and other assets, respectively, within the accompanying condensed consolidated balance sheets.

Significant changes in the deferred revenues balances during the six months ended March 31, 2021 were as follows:

	Six Months Ended   March 31, 2021
	(In thousands)
Deferred revenues at September 30, 2020 *	$	122,141
Revenue recognized that was included in the deferred revenues balance at the beginning of the period	(75,600)
Increases due to billings, excluding amounts recognized as revenue during the period	78,945
Reclassified as liabilities related to assets held for sale	$	(16,508)
Deferred revenues at March 31, 2021 *	$	108,978

* Deferred revenues at September 30, 2020 included current portion of $115.2 million and long-term portion of $6.9 million that were recorded in deferred revenue and other liabilities, respectively, within the condensed consolidated balance sheets. Deferred revenues at March 31, 2021 included current portion of $100.4 million and long-term portion of $8.6 million that were recorded in deferred revenue and other liabilities, respectively, within the condensed consolidated balance sheets.