Net Loss Per Common Unitholders' Interest (Tables)

3 Months Ended

Oct. 31, 2011

Net Loss Per Common Unitholders' Interest [Abstract]

Basic And Diluted Net Earnings Per Common Unitholders' Interest

	For the three months ended October 31,
	2011	2010
Common unitholders' interest in net loss	$(32,278)	$(27,763)
Weighted average common units outstanding    (in thousands)	75,966.4	69,559.6
Dilutive securities	0	0
Weighted average common units outstanding plus dilutive securities	75,966.4	69,559.6
Basic and diluted net loss per common unitholders' interest	$(0.42)	$(0.40)