Partnership's Debt (Detail) - USD ($) $ in Thousands		Sep. 30, 2015	Sep. 30, 2014
Debt Instrument [Line Items]
Long-term debt, carrying Amount		$ 100,000	$ 124,572
Current maturities of long-term debt, carrying Amount	[1]	10,000
Long-term portion of debt, Carrying Amount		90,000	124,572
Long-term debt, fair value	[2]	100,000	130,313
Current maturities of long-term debt, fair value	[1],[2]	10,000
Long-term portion of debt, fair value	[2]	90,000	130,313
8.875% Senior Notes
Debt Instrument [Line Items]
Long-term debt, carrying Amount	[3]		124,572
Long-term debt, fair value	[2],[3]		$ 130,313
$100 million Term Loan
Debt Instrument [Line Items]
Long-term debt, carrying Amount	[1]	100,000
Long-term debt, fair value	[1],[2]	$ 100,000

[1] On July 30, 2015, the Partnership entered into a third amended and restated asset based credit agreement with a bank syndicate comprised of thirteen participants, which enables the Partnership to borrow up to $300 million ($450 million during the heating season of December through April of each year) on a revolving credit facility for working capital purposes (subject to certain borrowing base limitations and coverage ratios), provides for a $100 million five-year senior secured term loan (the "$100 million Term Loan"), allows for the issuance of up to $100 million in letters of credit, and has a maturity date of July 30, 2020.

[2] The face amount of the Partnership's variable rate long-term debt approximates fair value.

[3] On September 3, 2015, the Partnership and its co-issuer and wholly owned subsidiary SGFC redeemed all of the 8.875% Senior Notes at the then redemption price of 104.438% plus any accrued but unpaid interest. The Partnership recorded a loss of $7.3 million on this transaction, resulting from the $5.5 million redemption price premium, and the related write-offs of $1.5 million in unamortized deferred charges and $0.3 million of unamortized debt discount.