CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		3 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Cash flows provided by (used in) operating activities:
Net income		$ 14,489	$ 37,860
Adjustment to reconcile net income to net cash provided by (used in) operating activities:
(Increase) decrease in the fair value of derivative instruments	[1]	13,403	(17,395)
Depreciation and amortization		8,687	8,204
Recovery for losses on accounts receivable		(288)	(476)
Change in deferred taxes		(684)	3,601
Change in weather hedge contracts		(2,188)	(3,955)
Changes in operating assets and liabilities:
Increase in receivables		(78,794)	(62,989)
Increase in inventories		(16,388)	(7,177)
Increase in other assets		(16,767)	(5,651)
Increase in accounts payable		15,442	12,325
Decrease in customer credit balances		(14,504)	(8,987)
Increase in other current and long-term liabilities		11,727	17,639
Net cash used in operating activities		(65,865)	(27,001)
Cash flows provided by (used in) investing activities:
Capital expenditures		(3,787)	(4,680)
Proceeds from sales of fixed assets		254	60
Proceeds from sale of propane assets			6,093
Purchase of investments		(175)	(303)
Acquisitions		(3,326)	(37,073)
Net cash used in investing activities		(7,034)	(35,903)
Cash flows provided by (used in) financing activities:
Revolving credit facility borrowings		115,064	59,341
Term loan repayments		(7,871)	(3,250)
Distributions		(5,790)	(5,939)
Unit repurchases		(11,765)	(25,272)
Customer retainage payments		(267)	(29)
Payments of debt issue costs			(11)
Net cash provided by financing activities		89,371	24,840
Net (decrease) increase in cash, cash equivalents, and restricted cash		16,472	(38,064)
Cash, cash equivalents, and restricted cash at beginning of period		5,017	57,161
Cash, cash equivalents, and restricted cash at end of period		$ 21,489	$ 19,097

[1] Represents the change in value of unrealized open positions and expired options.