Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Sep. 30, 2015		Sep. 30, 2014		Sep. 30, 2013
Sales:
Product		$ 1,431,585		$ 1,734,475		$ 1,518,738
Installations and services		242,706		227,249		223,058
Total sales		1,674,291		1,961,724		1,741,796
Cost and expenses:
Cost of product		977,631		1,349,432		1,192,009
Cost of installations and services		225,957		205,868		196,659
(Increase) decrease in the fair value of derivative instruments		4,187		6,566		6,775
Delivery and branch expenses		309,025		282,646		250,210
Depreciation and amortization expenses		24,930		21,635		17,303
General and administrative expenses		25,908		22,592		18,356
Multiemployer pension plan withdrawal charge		17,796
Finance charge income		(4,756)		(6,870)		(5,521)
Operating income		93,613		79,855		66,005
Interest expense, net		(14,059)		(16,854)		(14,433)
Amortization of debt issuance costs		(1,818)		(1,602)		(1,745)
Loss on redemption of debt		(7,345)
Income before income taxes		70,391		61,399		49,827
Income tax expense		32,835		25,315		19,921
Net income		37,556		36,084		29,906
General Partner's interest in net income		212		203		159
Limited Partners' interest in net income		$ 37,344		$ 35,881		$ 29,747
Basic and diluted income per Limited Partner Unit	[1]	$ 0.59	[2]	$ 0.57	[2]	$ 0.47
Weighted average number of Limited Partner units outstanding:
Basic and Diluted		57,285		57,476		59,409

[1] See Note 17 Earnings Per Limited Partner Units.

[2] 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.