CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		12 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Cash flows provided by (used in) operating activities:
Net Income (Loss)		$ 35,223	$ 31,945	$ 35,288
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
(Increase) decrease in the fair value of derivative instruments	[1]	19,018	1,977	17,286
Depreciation and amortization		32,482	33,434	33,553
Provision for losses on accounts receivable		8,042	9,761	5,411
Change in deferred taxes		(3,989)	(501)	(3,181)
Changes in operating assets and liabilities net of amounts related to acquisitions:
Decrease (increase) in receivables		11,271	15,566	(43,463)
Decrease (increase) in inventories		18,475	26,994	(21,105)
Decrease (increase) in other assets		8,786	13,873	(7,161)
(Decrease) increase in accounts payable		(3,926)	(13,824)	12,036
(Decrease) increase in customer credit balances		(15,546)	17,585	5,804
Increase (decrease) in other current and long-term liabilities		1,142	(13,152)	(561)
Net cash provided by operating activities		110,978	123,658	33,907
Cash flows provided by (used in) investing activities:
Capital expenditures		(10,653)	(9,012)	(18,701)
Proceeds from sales of fixed assets		515	958	815
Proceeds from sale of certain assets		0	2,202	184
Purchase of investments		(1,668)	(2,545)	(1,803)
Acquisitions		(49,379)	(19,800)	(13,121)
Net cash used in investing activities		(61,185)	(28,197)	(32,626)
Cash flows provided by (used in) financing activities:
Revolving credit facility borrowings		79,596	125,601	200,177
Revolving credit facility repayments		(79,831)	(145,637)	(188,519)
Proceeds from term loan		210,000	0	165,000
Loan repayments		(148,500)	(16,500)	(110,500)
Distributions		(25,038)	(23,744)	(23,192)
Unit repurchases		(11,088)	(4,475)	(30,817)
Customer retainage payments		(719)	(57)	(1,039)
Payments of debt issuance costs		(2,069)	(78)	(2,538)
Net cash provided by (used in) financing activities		22,351	(64,890)	8,572
Net increase (decrease) in cash, cash equivalents and restricted cash		72,144	30,571	9,853
Cash, cash equivalents and restricted cash at beginning of period		45,441	14,870	5,017
Cash, cash equivalents and restricted cash at end of period		$ 117,585	$ 45,441	$ 14,870

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