CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		12 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Cash flows provided by (used in) operating activities:
Net income		$ 87,737	$ 55,918	$ 17,637
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
(Increase) decrease in the fair value of derivative instruments	[1]	(36,138)	2,755	25,113
Depreciation and amortization		34,457	35,622	33,933
(Recovery) provision for losses on accounts receivable		(248)	3,441	9,541
Change in deferred taxes		11,361	(3,544)	(5,126)
Other loss, net		0	5,724	0
Changes in operating assets and liabilities net of amounts related to acquisitions:
(Increase) decrease in receivables		(15,171)	34,366	10,137
(Increase) decrease in inventories		(11,472)	14,588	(6,306)
Decrease in other assets		1,529	11,627	10,146
Increase (decrease) in accounts payable		6,939	(3,199)	(2,918)
Increase in customer credit balances		3,054	14,775	3,615
(Decrease) increase in other current and long-term liabilities		(13,171)	3,595	1,610
Net cash provided by operating activities		68,877	175,668	97,382
Cash flows provided by (used in) investing activities:
Capital expenditures		(15,083)	(14,127)	(11,301)
Proceeds from sales of fixed assets		424	631	1,097
Proceeds from sale of propane assets		6,093	0	0
Purchase of investments		(1,052)	(10,417)	(11,058)
Acquisitions		(40,708)	(4,228)	(60,904)
Net cash used in investing activities		(50,326)	(28,141)	(82,166)
Cash flows provided by (used in) financing activities:
Revolving credit facility borrowings		75,154	90,202	139,331
Revolving credit facility repayments		(66,536)	(151,702)	(79,331)
Proceeds from term loan		0	130,000	0
Loan repayments		(13,000)	(99,000)	(7,500)
Distributions		(23,448)	(24,451)	(25,593)
Unit repurchases		(42,824)	(38,431)	(51,353)
Customer retainage payments		(29)	(514)	(357)
Payments of debt issuance costs		(12)	(1,619)	(45)
Net cash used in financing activities		(70,695)	(95,515)	(24,848)
Net (decrease) increase in cash, cash equivalents and restricted cash		(52,144)	52,012	(9,632)
Cash, cash equivalents and restricted cash at beginning of period		57,161	5,149	14,781
Cash, cash equivalents and restricted cash at end of period		$ 5,017	$ 57,161	$ 5,149

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