CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Sales:
Product		$ 256,447	$ 158,531	$ 1,246,143	$ 950,307
Installations and services		70,907	67,270	202,076	191,664
Total sales		327,354	225,801	1,448,219	1,141,971
Cost and expenses:
Cost of product		186,207	104,268	832,280	592,802
Cost of installations and services		61,770	58,224	195,984	183,137
(Increase) decrease in the fair value of derivative instruments	[1]	(7,515)	3,135	(7,306)	7,026
Delivery and branch expenses		83,312	67,640	281,121	240,987
Depreciation and amortization expenses		7,941	7,418	23,385	20,705
General and administrative expenses		5,894	6,235	18,766	18,144
Finance charge income		(1,438)	(1,308)	(3,733)	(3,288)
Operating income (loss)		(8,817)	(19,811)	107,722	82,458
Interest expense, net		(2,186)	(1,619)	(6,656)	(5,118)
Amortization of debt issuance costs		(418)	(336)	(1,034)	(972)
Income (loss) before income taxes		(11,421)	(21,766)	100,032	76,368
Income tax expense (benefit)		(3,416)	(8,434)	23,077	31,721
Net income (loss)		(8,005)	(13,332)	76,955	44,647
General Partner’s interest in net income (loss)		(49)	(79)	445	259
Limited Partners’ interest in net income (loss)		$ (7,956)	$ (13,253)	$ 76,510	$ 44,388
Basic and diluted income (loss) per Limited Partner Unit		$ (0.15)	$ (0.24)	$ 1.18	$ 0.70
Weighted average number of Limited Partner units outstanding:
Basic and Diluted		53,938	55,888	55,157	55,888

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