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Related Party Transactions (Tables) | 12 Months Ended
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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 |

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- Definition Tabular disclosure of changes in company's estimated liability. + References No definition available. + Details
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Period Type: | duration