Employee Benefit Plans (Details 2)	12 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Weighted-Average Assumptions Used in the Measurement of the Partnership's Benefit Obligation
Discount rate at year end date	3.50%	4.35%	4.70%
Expected return on plan assets for the year ended	7.75%	7.75%	7.75%
Rate of compensation increase	0.00%	0.00%	0.00%

Expected rate of compensation increases (for pay-related plans).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (k)(2)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph j

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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