Condensed Consolidated Statement of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016
Statement of Comprehensive Income [Abstract]
Net loss	$ (1,819)	$ (404)	$ (5,703)	$ (1,121)
Foreign currency translation adjustments	183	1,754	(654)	339
Unrealized gains (losses) on available-for-sale securities, net of tax benefit of $134 and $4 for the three months ended October 31, 2016 and 2015, respectively	49	336	(352)	213
Reclassification adjustment for realized losses (gains) included in net loss	(60)	4	(119)	4
Other comprehensive loss	172	2,094	(1,125)	556
Comprehensive loss	$ (1,647)	$ 1,690	$ (6,828)	$ (565)

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax, before reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

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