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Summary of Significant Accounting Policies (Tables)

9 Months Ended

Jun. 30, 2012

Summary of Significant Accounting Policies [Abstract]

Net income per unit data

		Three Months Ended								Nine Months Ended
Basic and Diluted Earnings Per Limited Partner:		June 30,								June 30,
(in thousands, except per unit data)		2012				2011				2012				2011
Net income (loss)		$	(11,789	)		$	(18,197	)		$	31,624			$	51,042
Less General Partners’ interest in net income (loss)			(62	)			(88	)			166				247
Net income (loss) available to limited partners			(11,727	)			(18,109	)			31,458				50,795
Less dilutive impact of theoretical distribution of earnings under FASB ASC 260-10-45-60							—				3,141				6,702
Limited Partner’s interest in net income (loss) under FASB ASC 260-10-45-60		$	(11,727	)		$	(18,109	)		$	28,317			$	44,093
Per unit data:
Basic and diluted net income (loss) available to limited partners		$	(0.19	)		$	(0.27	)		$	0.51			$	0.76
Less dilutive impact of theoretical distribution of earnings under FASB ASC 260-10-45-60			—				—				0.05				0.10
Limited Partner’s interest in net income (loss) under FASB ASC 260-10-45-60		$	(0.19	)		$	(0.27	)		$	0.46			$	0.66
Weighted average number of Limited Partner units outstanding			61,024				67,078				62,236				67,078

Parts and equipment at lower of cost computed on the FIFO method

		June 30,				September 30,
(in thousands)		2012				2011
Liquid product		$	20,540			$	64,907
Parts and equipment			16,128				15,629
		$	36,668			$	80,536

Partnership's financial assets and liabilities measured at fair value on a recurring basis

(In thousands)

								Fair Value Measurements at Reporting Date Using:
Derivatives Not Designated as Hedging Instruments Under FASB ASC 815-10		Balance Sheet Location		Total				Quoted Prices in Active Markets for Identical Assets Level 1				Significant Other Observable Inputs Level 2				Significant Unobservable Inputs Level 3
Asset Derivatives at June 30, 2012
Commodity contracts		Fair asset and fair liability value of derivative instruments		$	25,608			$	10,017			$	15,591			$	—
Commodity contracts		Long-term derivative assets included in the deferred charges and other assets, net balance			—												—
Commodity contract assets at June 30, 2012				$	25,608			$	10,017			$	15,591			$	—
Liability Derivatives at June 30, 2012
Commodity contracts		Fair liability and fair asset value of derivative instruments		$	(32,203	)		$	(10,641	)		$	(21,562	)		$	—
Commodity contracts		Long-term derivative liabilities included in other long-term liabilities			—												—
Commodity contract liabilities at June 30, 2012				$	(32,203	)		$	(10,641	)		$	(21,562	)		$	—
Asset Derivatives at September 30, 2011
Commodity contracts		Fair asset and fair liability value of derivative instruments		$	41,531			$	550			$	40,981			$	—
Commodity contracts		Long-term derivative assets included in the deferred charges and other assets, net balance			257				171				86				—
Commodity contract assets at September 30, 2011				$	41,788			$	721			$	41,067			$	—
Liability Derivatives at September 30, 2011
Commodity contracts		Fair liability and fair asset value of derivative instruments		$	(41,179	)		$	(602	)		$	(40,577	)		$	—
Commodity contracts		Long-term derivative liabilities netted with the deferred charges and other assets, net balance			(96	)			(25	)			(71	)			—
Commodity contract liabilities at September 30, 2011				$	(41,275	)		$	(627	)		$	(40,648	)		$	—

(In thousands)

The Effect of Derivative Instruments on the Statement of Operations
				Amount of (Gain) or Loss Recognized in Income on Derivative
Derivatives Not Designated as Hedging Instruments Under FASB ASC 815-10		Location of (Gain) or Loss Recognized in Income on Derivative		Three Months Ended June 30, 2012				Three Months Ended June 30, 2011				Nine Months Ended June 30, 2012				Nine Months Ended June 30, 2011
Commodity contracts		Cost of product (a)		$	359			$	(9,717	)		$	15,683			$	(5,512	)
Commodity contracts		Cost of installations and service (a)		$	(120	)		$	(384	)		$	(224	)		$	(798	)
Commodity contracts		Delivery and branch expenses (a)		$	4			$	(229	)		$	(87	)		$	(712	)
Commodity contracts		(Increase) / decrease in the fair value of derivative instruments		$	11,225			$	16,323			$	1,362			$	(10,844	)

(a) Represents realized closed positions and includes the cost of options as they expire.

Property and equipment

(in thousands)		June 30, 2012				September 30, 2011
Property and equipment		$	164,960			$	155,426
Less: accumulated depreciation			112,871				108,295
Property and equipment, net		$	52,089			$	47,131

Current and deferred income tax expenses

		Three Months Ended								Nine Months Ended
		June 30,								June 30,
(in thousands)		2012				2011				2012				2011
Income (loss) before income taxes		$	(22,434	)		$	(30,784	)		$	53,022			$	90,934
Current tax expense (benefit)		$	(1,372	)		$	(194	)		$	7,741			$	14,427
Deferred tax expense (benefit)			(9,273	)			(12,393	)			13,657				25,465
Total tax expense (benefit)		$	(10,645	)		$	(12,587	)		$	21,398			$	39,892

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