Condensed Consolidated Statement of Partners' Capital and Comprehensive Income (USD $) In Thousands, unless otherwise specified		Total	Common	General Partner	Accum. Other Comprehensive Income (Loss)
Balance at Sep. 30, 2011		$ 272,633	$ 299,913	$ 187	$ (27,467)
Balance, Units at Sep. 30, 2011			64,970	326
Comprehensive income (unaudited):
Net income		31,624	31,458	166
Amortization of unrealized pension plan gain		2,064			2,064
Tax effect of unrealized gain on pension plan		(842)			(842)
Total comprehensive income		32,846	31,458	166	1,222
Distributions		(14,739)	(14,569)	(170)
Retirement of units (1)	[1]	(19,555)	(19,555)
Retirement of units (1), Units	[1]		(3,946)
Balance, (Unaudited) at Jun. 30, 2012		$ 271,185	$ 297,247	$ 183	$ (26,245)
Balance, Units (Unaudited) at Jun. 30, 2012			61,024	326

[1] See Note 2 - Common Unit Repurchase and Retirement