CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Sales:
Total sales		$ 743,045	$ 666,032	$ 1,231,108	$ 1,194,128
Cost and expenses:
(Increase) decrease in fair value of derivative instruments	[1]	(6,101)	(11,752)	(11,359)	7,278
Delivery and branch expenses		124,927	104,085	224,254	198,449
Depreciation and amortization expenses		8,912	7,748	16,815	16,134
General and administrative expenses		8,187	6,887	15,370	13,908
Finance charge income		(1,412)	(1,253)	(2,087)	(2,024)
Operating income		125,372	100,331	174,591	121,952
Interest expense, net		(4,464)	(3,838)	(7,475)	(7,056)
Amortization of debt issuance costs		(230)	(249)	(530)	(499)
Income before income taxes		120,678	96,244	166,586	114,397
Income tax expense		34,767	27,870	47,791	33,044
Net income		85,911	68,374	118,795	81,353
General Partner's interest in net income		802	620	1,109	738
Limited Partners' interest in net income		$ 85,109	$ 67,754	$ 117,686	$ 80,615
Basic and diluted income per Limited Partner Unit:	[2]	$ 2.01	$ 1.56	$ 2.8	$ 1.88
Weighted average number of Limited Partner units outstanding:
Weighted average number of Limited Partner units outstanding, Basic		34,569	35,549	34,578	35,571
Weighted average number of Limited Partner units outstanding, Diluted		34,569	35,549	34,578	35,571
Product
Sales:
Total sales		$ 665,105	$ 595,298	$ 1,064,564	$ 1,043,848
Installations and services
Sales:
Total sales		77,940	70,734	166,544	150,280
Cost of product
Cost and expenses:
Cost and expenses		406,950	389,394	655,649	692,732
Cost of installations and services
Cost and expenses:
Cost and expenses		$ 76,210	$ 70,592	$ 157,875	$ 145,699

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

[2] See Note 15 - Earnings Per Limited Partner Unit.