Related Party Transactions (Tables)

12 Months Ended

Jul. 31, 2017

Related Party Transactions [Abstract]

Summary of changes in estimated liability to straight path included in other current liabilities

Year ended July 31
(in thousands)	2017			2016
Balance at beginning of year	$	133		$	286
Additional liability		104			59
Adjustments		(51	)		(136	)
Payments		(105	)		(76	)
Balance at end of year	$	81		$	133