CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2018	Oct. 31, 2017
Net loss	$ (7,365)	$ (5,237)
Other comprehensive income (loss):
Foreign currency translation adjustment	(1,622)	272
Net unrealized holding gain on securities, net of tax	(15)	(13)
Pension liability adjustments, net of tax	405	26
Other comprehensive income (loss)	(1,232)	285
Comprehensive loss	$ (8,597)	$ (4,952)