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Net Earnings (Loss) Per Common Unitholders' Interest (Tables)
 6 Months Ended
Jan. 31, 2013
Earnings Per Share [Abstract]  
Basic And Diluted Net Earnings Per Common Unitholders' Interest


For the three months ended January 31,

For the six months ended January 31,


2013

2012

2013

2012
Common unitholders’ interest in net earnings

$
55,069


$
36,010


$
40,144


$
3,732










Weighted average common units outstanding (in thousands)

79,015.6


76,401.6


79,014.4


76,184.0










Dilutive securities

36.1


62.2


40.6


65.1










Weighted average common units outstanding plus dilutive securities

79,051.7


76,463.8


79,055.0


76,249.1










Basic and diluted net earnings per common unitholders’ interest

$
0.70


$
0.47


$
0.51


$
0.05