CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Sep. 30, 2020		Sep. 30, 2019		Sep. 30, 2018
Sales:
Total sales		$ 1,467,458		$ 1,753,872		$ 1,677,837
Cost and expenses:
(Increase) decrease in the fair value of derivative instruments	[1]	2,755		25,113		(11,408)
Delivery and branch expenses		323,373		369,033		357,580
Depreciation and amortization expenses		34,623		32,901		31,575
General and administrative expenses		25,072		28,414		24,227
Finance charge income		(3,771)		(5,105)		(4,700)
Operating income		92,968		37,350		66,068
Interest expense, net		(9,702)		(11,164)		(8,716)
Amortization of debt issuance costs		(999)		(1,032)		(1,288)
Other income (loss), net		(5,724)				7,043
Income before income taxes		76,543		25,154		63,107
Income tax expense		20,625		7,517		7,602
Net income		55,918		17,637		55,505
General Partner’s interest in net income		377		95		314
Limited Partners’ interest in net income		$ 55,541		$ 17,542		$ 55,191
Basic and diluted income per Limited Partner Unit:	[2]	$ 1.07	[3]	$ 0.35	[3]	$ 0.89
Weighted average number of Limited Partner units outstanding:
Basic and Diluted		45,656		50,814		54,764
Product
Sales:
Total sales		$ 1,186,026		$ 1,466,045		$ 1,404,370
Installations and services
Sales:
Total sales		281,432		287,827		273,467
Cost of product
Cost and expenses:
Cost and expenses		738,714		998,559		957,843
Cost of installations and services
Cost and expenses:
Cost and expenses		$ 253,724		$ 267,607		$ 256,652

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

[2] See Note 19 - Earnings Per Limited Partner Units.

[3] The sum of the quarters do not add-up to the total due to the weighting of Limited Partner Units outstanding, rounding or the theoretical effects of FASB ASC 260-10-45-60 to Master Limited Partners earnings per unit.