Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2012
Sales:
Product	$ 1,734,475		$ 1,518,738		$ 1,295,374
Installations and services	227,249		223,058		202,214
Total sales	1,961,724		1,741,796		1,497,588
Cost and expenses:
Cost of product	1,349,432		1,192,009		1,024,071
Cost of installations and services	205,868		196,659		175,740
(Increase) decrease in the fair value of derivative instruments	6,566		6,775		(8,549)
Delivery and branch expenses	282,646		250,210		217,376
Depreciation and amortization expenses	21,635		17,303		16,395
General and administrative expenses	22,592		18,356		18,689
Finance charge income	(6,870)		(5,521)		(4,393)
Operating income	79,855		66,005		58,259
Interest expense, net	(16,854)		(14,433)		(14,060)
Amortization of debt issuance costs	(1,602)		(1,745)		(1,634)
Income before income taxes	61,399		49,827		42,565
Income tax expense	25,315		19,921		16,576
Net income	36,084		29,906		25,989
General Partner's interest in net income	203		159		136
Limited Partners' interest in net income	$ 35,881		$ 29,747		$ 25,853
Basic and diluted income per Limited Partner Unit	$ 0.57	[1],[2]	$ 0.47	[1],[2]	$ 0.40	[2]
Weighted average number of Limited Partner units outstanding:
Basic and Diluted	57,476		59,409		61,931

[1] 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.

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