CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		9 Months Ended
		Jun. 30, 2021	Jun. 30, 2020
Cash flows provided by (used in) operating activities:
Net income		$ 110,970	$ 86,117
Adjustment to reconcile net income to net cash provided by (used in) operating activities:
(Increase) decrease in the fair value of derivative instruments	[1]	(30,333)	1,974
Depreciation and amortization		25,525	27,315
Provision for losses on accounts receivable		622	4,556
Change in deferred taxes		12,682	(1,154)
Changes in operating assets and liabilities:
(Increase) decrease in receivables		(35,954)	4,745
(Increase) decrease in inventories		(6,951)	21,135
Decrease in other assets		545	12,037
Increase (decrease) in accounts payable		2,173	(8,229)
Decrease in customer credit balances		(30,519)	(18,537)
Increase in other current and long-term liabilities		10,698	26,338
Net cash provided by operating activities		59,458	156,297
Cash flows provided by (used in) investing activities:
Capital expenditures		(11,660)	(8,573)
Proceeds from sales of fixed assets		240	395
Proceeds from sale of propane assets		6,093
Purchase of investments		(827)	(10,044)
Acquisitions		(40,708)	(496)
Net cash used in investing activities		(46,862)	(18,718)
Cash flows provided by (used in) financing activities:
Revolving credit facility borrowings		75,154	90,202
Revolving credit facility repayments		(75,154)	(151,702)
Loan issuance			130,000
Term loan repayments		(9,750)	(95,750)
Distributions		(17,535)	(18,389)
Unit repurchases		(36,682)	(27,988)
Customer retainage payments		(29)	(514)
Payments of debt issue costs		(11)	(1,619)
Net cash used in financing activities		(64,007)	(75,760)
Net (decrease) increase in cash, cash equivalents, and restricted cash		(51,411)	61,819
Cash, cash equivalents, and restricted cash at beginning of period		57,161	5,149
Cash, cash equivalents, and restricted cash at end of period		$ 5,750	$ 66,968

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