Net Earnings (Loss) Per Common Unitholders' Interest (Tables)

12 Months Ended

Jul. 31, 2019

Earnings Per Share [Abstract]

Earnings Distribution Allocation

	Ratio of total distributions payable to:
Quarterly distribution per common unit	Common unitholder		General partner
$0.56 to $0.63	86.9	%	13.1	%
$0.64 to $0.82	76.8	%	23.2	%
$0.83 and above	51.5	%	48.5	%

Basic And Diluted Net Earnings Per Common Unitholders' Interest

	For the year ended July 31,
	2019		2018		2017
Common unitholders’ interest in net loss	$	(63,605)	$	(252,035)	$	(53,665)
Weighted average common units outstanding (in thousands)		97,152.7		97,152.7		97,229.5
Basic and diluted net loss per common unit	$	(0.65)	$	(2.59)	$	(0.55)