Consolidated Statements of Changes in Members' Equity (USD $) In Thousands, unless otherwise specified	Total	Common Units	Subordinated Units	Managing Member Interest
Balance at Mar. 31, 2012	$ 690,390	$ 391,585	$ 287,105	$ 11,700
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(37,346)	(18,487)	(18,119)	(740)
Distributions to unitholders	(12,917)	(12,367)	(295)	(255)
Balance at Jun. 30, 2012	640,127	360,731	268,691	10,705
Balance at Mar. 31, 2013	597,377	321,642	265,877	9,858
Increase (Decrease) in Stockholders' Equity
Cancellation of subordinated units			(265,877)	265,877
Net income (loss)	7,967	7,809		158
Distributions to unitholders	(14,945)	(14,649)		(296)
Balance at Jun. 30, 2013	$ 590,399	$ 314,802		$ 275,597