Condensed Consolidated Statement of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2016	Apr. 30, 2015
Statement of Comprehensive Income [Abstract]
Net loss	$ (404)	$ (2,987)	$ (1,121)	$ (2,008)
Foreign currency translation adjustments	1,754	541	339	(3,677)
Unrealized gains (losses) on available-for-sale securities, net of tax benefit (expense) of $(202) and $37 for the three months ended April 30, 2016 and 2015, respectively; $(129) and $(35) for the nine months ended April 30, 2016 and 2015, respectively	336	(54)	213	80
Reclassification adjustment for realized losses (gains) included in net loss	4	0	4	(7)
Other comprehensive income (loss)	2,094	487	556	(3,604)
Comprehensive income (loss)	$ 1,690	$ (2,500)	$ (565)	$ (5,612)