Revenue Recognition (Tables)

6 Months Ended

Mar. 31, 2021

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 and six months ended March 31, 2021 and March 31, 2020:

	Three Months Ended March 31,				Six Months Ended March 31,
(in thousands)	2021		2020		2021		2020
Petroleum Products:
Home heating oil and propane	$	466,401	$	413,466	$	707,213	$	756,812
Other petroleum products		72,970		67,809		132,490		157,151
Total petroleum products		539,371		481,275		839,703		913,963
Installations and Services:
Equipment installations		22,865		20,158		52,925		50,723
Equipment maintenance service contracts		27,045		27,764		53,913		55,672
Billable call services		14,834		13,866		30,894		31,650
Total installations and services		64,744		61,788		137,732		138,045
Total Sales	$	604,115	$	543,063	$	977,435	$	1,052,008

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		256
Write-offs, net and other		(580	)
Balance as of March 31, 2021	$	5,797