Revenue Recognition (Tables)

3 Months Ended

Dec. 31, 2020

Revenue From Contract With Customer [Abstract]

Summary of Disaggregation of Revenue by Major Sources

The following disaggregates our revenue by major sources for the three months ended December 31, 2020 and December 31, 2019:

	Three Months Ended December 31,
(in thousands)	2020		2019
Petroleum Products:
Home heating oil and propane	$	240,812	$	343,346
Other petroleum products		59,520		89,342
Total petroleum products		300,332		432,688
Installations and Services:
Equipment installations		30,060		30,565
Equipment maintenance service contracts		26,868		27,908
Billable call services		16,060		17,784
Total installations and services		72,988		76,257
Total Sales	$	373,320	$	508,945

Summary of Changes in Allowance for Credit Losses

Changes in the allowance for credit losses are as follows:

(in thousands)	Credit Loss Allowance
Balance at September 30, 2020	$	6,121
Current period provision		(476	)
Write-offs, net and other		(460	)
Balance at December 31, 2020	$	5,185