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Condensed Consolidated Statement of Partners' Capital and Comprehensive Income (USD $) In Thousands	Common [Member]	General Partner [Member]	Accum. Other Comprehensive Income (Loss) [Member]	Total
Balance, Value at Sep. 30, 2010	$ 307,092	$ 290	$ (27,471)	$ 279,911
Balance, Units at Sep. 30, 2010	67,078	326
Comprehensive income (unaudited):
Net income	50,795	247		51,042
Unrealized gain on pension plan obligation			2,073	2,073
Tax effect of unrealized gain on pension plan			(861)	(861)
Total comprehensive income	50,795	247	1,212	52,254
Distributions	(15,260)	(159)		(15,419)
Balance, Value at Jun. 30, 2011	$ 342,627	$ 378	$ (26,259)	$ 316,746
Balance, Units at Jun. 30, 2011	67,078	326

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The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the economic entity, including both controlling (parent) and noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, including any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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