Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2015	Oct. 31, 2014
Net Income	$ 5,423	$ 2,120
Other Comprehensive Income (Loss):
Unrealized Loss on Marketable Securities	0	(114)
Pension and Postretirement Benefits (Net of Tax)	178	99
Cumulative Translation Adjustment	(11)	(85)
Other Comprehensive Income (Loss)	167	(100)
Total Comprehensive Income	$ 5,590	$ 2,020