CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		3 Months Ended
		Dec. 31, 2023	Dec. 31, 2022
Cash flows provided by (used in) operating activities:
Net income		$ 12,979	$ 13,539
Adjustment to reconcile net income to net cash provided by (used in) operating activities:
(Increase) decrease in the fair value of derivative instruments	[1]	19,030	17,636
Depreciation and amortization		8,636	8,166
Provision for losses on accounts receivable		649	1,046
Change in deferred taxes		(1,591)	(1,224)
Change in weather hedge contracts		(980)	350
Changes in operating assets and liabilities:
Increase in receivables		(73,590)	(115,164)
Increase in inventories		(26,805)	(28,717)
Decrease (increase) in other assets		704	(2,005)
Increase in accounts payable		11,095	22,366
Decrease in customer credit balances		(21,852)	(14,700)
Increase in other current and long-term liabilities		11,417	5,966
Net cash used in operating activities		(60,308)	(92,741)
Cash flows provided by (used in) investing activities:
Capital expenditures		(3,174)	(3,095)
Proceeds from sales of fixed assets		185	215
Proceeds from sale of certain assets		0	2,202
Purchase of investments		(409)	(215)
Acquisitions		(2,477)	(1,193)
Net cash used in investing activities		(5,875)	(2,086)
Cash flows provided by (used in) financing activities:
Revolving credit facility borrowings		51,637	116,298
Term loan repayments		(4,000)	(4,125)
Distributions		(6,118)	(5,774)
Unit repurchases		(150)	(3,596)
Customer retainage payments		(452)	(5)
Net cash provided by financing activities		40,917	102,798
Net (decrease) increase in cash, cash equivalents, and restricted cash		(25,266)	7,971
Cash, cash equivalents, and restricted cash at beginning of period		45,441	14,870
Cash, cash equivalents, and restricted cash at end of period		$ 20,175	$ 22,841

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